diff --git a/app/Http/Controllers/InvoiceController.php b/app/Http/Controllers/InvoiceController.php
index 9670023..7b3f725 100644
--- a/app/Http/Controllers/InvoiceController.php
+++ b/app/Http/Controllers/InvoiceController.php
@@ -1,10 +1,12 @@
 <?php
+
 namespace App\Http\Controllers;
 
 use Inertia\Inertia;
 use App\Models\Invoice;
 use App\Models\LineItem;
 use App\Models\Setting;
+use App\Models\Unit;
 use App\Mail\Reminder;
 use App\Support\ApiDataTransformer;
 use Illuminate\Http\Request;
@@ -107,6 +109,16 @@ public static function single($id)
         ])->findOrFail($id);
 
         $invoiceArray = $invoice->toArray();
+
+        $unitIds = array_unique(array_column($invoiceArray['items'], 'unit_id'));
+        $units = Unit::whereIn('id', $unitIds)->get()->keyBy('id');
+        $invoiceArray['items'] = array_map(function ($item) use ($units) {
+            if (isset($item['unit_id']) && $units->has($item['unit_id'])) {
+                $item['unit'] = $units->get($item['unit_id'])->toArray();
+            }
+            return $item;
+        }, $invoiceArray['items']);
+
         $invoiceArray['customer']['payment_terms'] = $invoice->customer->paymentTerms->toArray();
         unset($invoiceArray['customer']['payment_terms_id']);
 
@@ -211,7 +223,9 @@ public function exportPdf($id)
             'isPDF' => true,
             'fontPath' => public_path('storage/fonts/'),
             'giroCode' => $giroCode,
-            'totalPages' => 1
+            'totalPages' => 1,
+            'companyName' => Setting::get('company.name'),
+            'companyAddress' => json_decode(Setting::get('company.address'), true)
         ];
 
         $options = [
@@ -476,7 +490,7 @@ public function store(Request $request)
             'items.*.title' => 'nullable|string',
             'items.*.description' => 'nullable|string',
             'items.*.quantity' => 'nullable|numeric',
-            'items.*.unit' => 'nullable|string',
+            'items.*.unitId' => 'nullable|integer',
             'items.*.price' => 'nullable|numeric',
         ]);
 
@@ -563,7 +577,7 @@ public function update(Request $request, $id)
             'items.*.title' => 'nullable|string',
             'items.*.description' => 'nullable|string',
             'items.*.quantity' => 'nullable|numeric',
-            'items.*.unit' => 'nullable|string',
+            'items.*.unitId' => 'nullable|integer',
             'items.*.price' => 'nullable|numeric',
         ]);
 
@@ -594,8 +608,8 @@ public function update(Request $request, $id)
             if (!empty($snakeCaseData['items'])) {
                 foreach ($snakeCaseData['items'] as $item) {
                     // Remove unit from item data if it's empty to let the database use the default value
-                    if (empty($item['unit'])) {
-                        unset($item['unit']);
+                    if (empty($item['unitId'])) {
+                        unset($item['unitId']);
                     }
                     if (isset($item['id']) && $item['id'] > 0) {
                         // Update existing item
diff --git a/app/Http/Controllers/LineItemController.php b/app/Http/Controllers/LineItemController.php
index 219e1c2..e1ee58f 100644
--- a/app/Http/Controllers/LineItemController.php
+++ b/app/Http/Controllers/LineItemController.php
@@ -3,7 +3,9 @@
 namespace App\Http\Controllers;
 
 use App\Models\LineItem;
+use App\Models\Unit;
 use App\Support\ApiDataTransformer;
+use Illuminate\Http\Request;
 
 class LineItemController extends Controller
 {
@@ -26,4 +28,177 @@ public function index($invoiceId)
             return ApiDataTransformer::snakeToCamel($itemArray);
         });
     }
+
+    /**
+     * Imports LineItems from a CSV file for a specific invoice
+     *
+     * CSV Format Requirements:
+     * 1. The CSV file must be semicolon-separated (use ; as delimiter) to avoid conflicts with commas in numeric values
+     * 2. The CSV file must contain the following columns (in any order):
+     *    - position (optional): The position of the item in the invoice (if not provided, items will be numbered sequentially starting from 1)
+     *    - title (required): The title of the item
+     *    - description (optional): A description of the item
+     *    - quantity (optional): The quantity (default: 1). Can use comma as decimal separator and dot as thousands separator (e.g., 1.500,50 for 1500.50)
+     *    - unit (required): The unit (must exist in the units table, either as name or symbol)
+     *    - price (optional): The price per unit (default: 0). Can use comma as decimal separator and dot as thousands separator (e.g., 1.500,50 for 1500.50)
+     *
+     * 3. The first row can optionally contain a header row with column names
+     * 4. Each row must contain at least the 'title' and 'unit' columns
+     * 5. Empty rows or rows with incomplete data will be skipped
+     * 6. The CSV file must have the extension .csv or .txt
+     *
+     * Example CSV (with header):
+     * position;title;description;quantity;unit;price
+     * 1;"Webdesign";"Development of a new website";10;"Hours";93,75
+     * ;"Hosting";"Annual hosting";1.500,50;"lump sum";1.200,00
+     *
+     * Example CSV (without header):
+     * 1;"Webdesign";"Development of a new website";10;"Hours";93,75
+     * ;"Hosting";"Annual hosting";1.500,50;"lump sum";1.200,00
+     *
+     * @param Request $request The HTTP request with the CSV file
+     * @param int $invoiceId The ID of the invoice for which the items will be imported
+     * @return \Illuminate\Http\JsonResponse A JSON response with the imported items or an error message
+     */
+    public function importFromCsv(Request $request, $invoiceId)
+    {
+        $request->validate([
+            'csv' => 'required|file|mimes:csv,txt'
+        ]);
+
+        $file = $request->file('csv');
+        $csvData = array_map(function ($row) {
+            // Use semicolon as delimiter
+            return str_getcsv($row, ';');
+        }, file($file->getRealPath()));
+
+        // Skip header row if it exists
+        if (count($csvData) > 0 && count($csvData[0]) > 0) {
+            $headers = array_map('trim', $csvData[0]);
+            $data = array_slice($csvData, 1);
+        } else {
+            $headers = [];
+            $data = $csvData;
+        }
+
+        // Default headers if none provided
+        if (empty($headers)) {
+            $headers = ['position', 'title', 'description', 'quantity', 'unit', 'price'];
+        }
+
+        $lineItems = [];
+        $units = Unit::all();
+        $positionCounter = 1;
+
+        // Create a NumberFormatter for German locale
+        $formatter = new \NumberFormatter('de_DE', \NumberFormatter::DECIMAL);
+
+        foreach ($data as $row) {
+            if (count($row) < count($headers)) {
+                continue; // Skip incomplete rows
+            }
+
+            $itemData = array_combine($headers, $row);
+            $itemData = array_map('trim', $itemData);
+
+            // Validate required fields
+            if (empty($itemData['title']) || empty($itemData['unit'])) {
+                continue;
+            }
+
+            // Find unit by name or symbol
+            $unit = $units->first(function ($u) use ($itemData) {
+                return strtolower($u->name) === strtolower($itemData['unit']) ||
+                    strtolower($u->symbol) === strtolower($itemData['unit']);
+            });
+
+            if (!$unit) {
+                return response()->json([
+                    'message' => "Unit '{$itemData['unit']}' not found in database. Please add it first."
+                ], 400);
+            }
+
+            // Determine position
+            $position = !empty($itemData['position']) ? (float)$itemData['position'] : $positionCounter++;
+
+            // Parse quantity using NumberFormatter
+            $quantity = $this->parseNumber($formatter, $itemData['quantity'] ?? 1);
+
+            // Parse price using NumberFormatter
+            $price = $this->parseNumber($formatter, $itemData['price'] ?? 0);
+
+            // Validate numeric values
+            if (!is_numeric($quantity) || !is_numeric($price)) {
+                continue; // Skip rows with invalid numeric values
+            }
+
+            $lineItems[] = [
+                'invoice_id' => $invoiceId,
+                'position' => $position,
+                'is_section' => false,
+                'title' => $itemData['title'],
+                'description' => $itemData['description'] ?? '',
+                'quantity' => (float)$quantity,
+                'unit_id' => $unit->id,
+                'price' => (float)$price,
+                'created_at' => now(),
+                'updated_at' => now()
+            ];
+        }
+
+        if (empty($lineItems)) {
+            return response()->json(['message' => 'No valid items found in the CSV file'], 400);
+        }
+
+        // Delete existing items for this invoice
+        LineItem::where('invoice_id', $invoiceId)->delete();
+
+        // Insert new items
+        LineItem::insert($lineItems);
+
+        // Return the newly created items
+        $items = LineItem::with('unit')
+            ->where('invoice_id', $invoiceId)
+            ->orderBy('position', 'asc')
+            ->get();
+
+        return $items->map(function ($item) {
+            $itemArray = $item->toArray();
+
+            if ($item->unit) {
+                $itemArray['unit_name'] = $item->unit->name;
+                $itemArray['unit_symbol'] = $item->unit->symbol;
+            }
+
+            return ApiDataTransformer::snakeToCamel($itemArray);
+        });
+    }
+
+    /**
+     * Parses a number using NumberFormatter for the specified locale
+     *
+     * @param \NumberFormatter $formatter The NumberFormatter instance
+     * @param string|float $value The value to parse
+     * @return float The parsed number
+     */
+    protected function parseNumber(\NumberFormatter $formatter, $value)
+    {
+        if (is_numeric($value)) {
+            return (float)$value;
+        }
+
+        if (!is_string($value)) {
+            return 0.0;
+        }
+
+        // Parse the number using NumberFormatter
+        $parsed = $formatter->parse($value);
+
+        // Check if parsing was successful
+        if ($parsed === false) {
+            return 0.0;
+        }
+
+        return (float)$parsed;
+    }
 }
diff --git a/app/Http/Controllers/UnitController.php b/app/Http/Controllers/UnitController.php
new file mode 100644
index 0000000..f0ca790
--- /dev/null
+++ b/app/Http/Controllers/UnitController.php
@@ -0,0 +1,101 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Unit;
+use Illuminate\Http\Request;
+use App\Support\ApiDataTransformer;
+use Illuminate\Support\Facades\Validator;
+
+class UnitController extends Controller
+{
+    /**
+     * Display a listing of the resource.
+     */
+    public function index()
+    {
+        $units = Unit::all()->toArray();
+        return ApiDataTransformer::snakeToCamel($units);
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     */
+    public function store(Request $request)
+    {
+        $validator = Validator::make($request->all(), [
+            'name' => 'required|string|max:50|unique:units',
+            'symbol' => 'nullable|string|max:10',
+        ]);
+
+        if ($validator->fails()) {
+            return response()->json([
+                'message' => 'Validation failed',
+                'errors' => $validator->errors()
+            ], 422);
+        }
+
+        // Wandeln Sie die Daten von camelCase in snake_case um
+        $data = ApiDataTransformer::camelToSnake($request->all());
+        $unit = Unit::create($data);
+
+        return response()->json([
+            'message' => 'Unit created successfully',
+            'data' => ApiDataTransformer::snakeToCamel($unit->toArray())
+        ], 201);
+    }
+
+    /**
+     * Display the specified resource.
+     */
+    public function show(Unit $unit)
+    {
+        return ApiDataTransformer::snakeToCamel($unit->toArray());
+    }
+
+    /**
+     * Update the specified resource in storage.
+     */
+    public function update(Request $request, Unit $unit)
+    {
+        $validator = Validator::make($request->all(), [
+            'name' => 'sometimes|required|string|max:50|unique:units,name,' . $unit->id,
+            'symbol' => 'nullable|string|max:10',
+        ]);
+
+        if ($validator->fails()) {
+            return response()->json([
+                'message' => 'Validation failed',
+                'errors' => $validator->errors()
+            ], 422);
+        }
+
+        // Wandeln Sie die Daten von camelCase in snake_case um
+        $data = ApiDataTransformer::camelToSnake($request->all());
+        $unit->update($data);
+
+        return response()->json([
+            'message' => 'Unit updated successfully',
+            'data' => ApiDataTransformer::snakeToCamel($unit->toArray())
+        ]);
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     */
+    public function destroy(Unit $unit)
+    {
+        // Check if the unit is used by any products or line items
+        if ($unit->products()->exists() || $unit->lineItems()->exists()) {
+            return response()->json([
+                'message' => 'Cannot delete unit as it is used by products or line items'
+            ], 409);
+        }
+
+        $unit->delete();
+
+        return response()->json([
+            'message' => 'Unit deleted successfully'
+        ]);
+    }
+}
diff --git a/app/Support/ApiDataTransformer.php b/app/Support/ApiDataTransformer.php
index 5e75884..d770d09 100644
--- a/app/Support/ApiDataTransformer.php
+++ b/app/Support/ApiDataTransformer.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace App\Support;
 
 class ApiDataTransformer
@@ -11,7 +12,7 @@ public static function snakeToCamel(array $data): array
         $result = [];
 
         foreach ($data as $key => $value) {
-            $camelKey = self::convertSnakeToCamel($key);
+            $camelKey = lcfirst(str_replace(' ', '', ucwords(str_replace('_', ' ', $key))));
 
             if (is_array($value)) {
                 $result[$camelKey] = self::snakeToCamel($value);
@@ -33,7 +34,7 @@ public static function camelToSnake(array $data): array
         $result = [];
 
         foreach ($data as $key => $value) {
-            $snakeKey = self::convertCamelToSnake($key);
+            $snakeKey = strtolower(preg_replace('/(?<!^)[A-Z]/', '_$0', $key));
 
             if (is_array($value)) {
                 $result[$snakeKey] = self::camelToSnake($value);
@@ -47,19 +48,23 @@ public static function camelToSnake(array $data): array
         return $result;
     }
 
-    /**
-     * Convert a single string from snake_case to camelCase
-     */
-    protected static function convertSnakeToCamel(string $string): string
-    {
-        return lcfirst(str_replace(' ', '', ucwords(str_replace('_', ' ', $string))));
-    }
 
-    /**
-     * Convert a single string from camelCase to snake_case
-     */
-    protected static function convertCamelToSnake(string $string): string
+    protected function parseGermanNumber($value)
     {
-        return strtolower(preg_replace('/(?<!^)[A-Z]/', '_$0', $string));
+        if (is_numeric($value)) {
+            return (float)$value;
+        }
+
+        if (!is_string($value)) {
+            return 0.0;
+        }
+
+        // Remove all dots (thousands separators)
+        $value = str_replace('.', '', $value);
+
+        // Replace comma with dot for decimal separator
+        $value = str_replace(',', '.', $value);
+
+        return (float)$value;
     }
-}
\ No newline at end of file
+}
diff --git a/database/migrations/2025_09_18_193251_create_line_items_table.php b/database/migrations/2025_09_18_193251_create_line_items_table.php
index c9112c9..5ee1ad7 100644
--- a/database/migrations/2025_09_18_193251_create_line_items_table.php
+++ b/database/migrations/2025_09_18_193251_create_line_items_table.php
@@ -18,10 +18,13 @@ public function up(): void
             $table->boolean('is_section')->default(false);
             $table->string('title')->nullable();
             $table->string('description')->nullable();
-            $table->integer('quantity')->default(1);
+            $table->decimal('quantity')->default(1);
             $table->foreignId('unit_id')->nullable()->constrained()->nullOnDelete();
             $table->decimal('price', 10, 2)->nullable();
             $table->timestamps();
+
+            $table->index('position');
+            $table->index('invoice_id');
         });
     }
 
diff --git a/database/seeders/UnitSeeder.php b/database/seeders/UnitSeeder.php
index 94ae58b..3879e3b 100644
--- a/database/seeders/UnitSeeder.php
+++ b/database/seeders/UnitSeeder.php
@@ -9,7 +9,7 @@ class UnitSeeder extends Seeder
 {
     public function run(): void
     {
-        Unit::create(['name' => 'Stück',    'symbol' => 'Stk']);
+        Unit::create(['name' => 'Stück',    'symbol' => 'Stk.']);
         Unit::create(['name' => 'Stunden',  'symbol' => 'h']);
         Unit::create(['name' => 'Tage',     'symbol' => 'd']);
         Unit::create(['name' => 'pauschal', 'symbol' => 'p']);
diff --git a/resources/js/components/documents/DocumentTable.vue b/resources/js/components/documents/DocumentTable.vue
index 4eae226..7684852 100644
--- a/resources/js/components/documents/DocumentTable.vue
+++ b/resources/js/components/documents/DocumentTable.vue
@@ -1,10 +1,10 @@
 <script setup lang="ts">
 
 import { computed } from 'vue'
-import { type Invoice } from '@/types'
+import { Invoice } from '@/types'
 import { toLocalDate, toCurrency, toFixedRounded } from '@/lib/utils'
 import { StatusBadge, statusBadgeLabels, statusTextStyle, castToStatusVariant } from '@/components/ui/status-badge'
-import { Table, TableBody, TableCaption, TableCell, TableFooter, TableHead, TableHeader, TableRow } from '@/components/ui/table'
+import { Table, TableBody, TableCell, TableFooter, TableHead, TableHeader, TableRow } from '@/components/ui/table'
 
 
 const props = defineProps<{
@@ -176,8 +176,9 @@ const calcTaxes = (amount: number) => {
                 <TableCell class="py-4 text-right tabular-nums">{{ toCurrency(totalPaid) }}</TableCell>
                 <TableCell class=" text-right tabular-nums hidden lg:table-cell">{{ toCurrency(totalTaxPaid) }}
                 </TableCell>
-                <TableCell class="lg:pr-4 text-right tabular-nums hidden lg:table-cell font-bold">{{ toCurrency(totalGrossPaid)
-                }}</TableCell>
+                <TableCell class="lg:pr-4 text-right tabular-nums hidden lg:table-cell font-bold">{{
+                    toCurrency(totalGrossPaid)
+                    }}</TableCell>
             </TableRow>
 
             <TableRow v-if="totalDue > 0" class="border-none text-destructive hover:bg-transparent">
@@ -188,7 +189,8 @@ const calcTaxes = (amount: number) => {
                 <TableCell class="py-4 text-right tabular-nums">{{ toCurrency(totalDue) }}</TableCell>
                 <TableCell class="text-right tabular-nums hidden lg:table-cell">{{ toCurrency(totalTaxDue) }}
                 </TableCell>
-                <TableCell class="lg:pr-4 text-right tabular-nums hidden lg:table-cell font-bold">{{ toCurrency(totalGrossDue)
+                <TableCell class="lg:pr-4 text-right tabular-nums hidden lg:table-cell font-bold">{{
+                    toCurrency(totalGrossDue)
                     }}</TableCell>
             </TableRow>
 
@@ -213,9 +215,8 @@ const calcTaxes = (amount: number) => {
     font-size: 0.833rem;
 }
 
-.document-table th {
+.document-table th {}
 
-}
 .document-table td {
     padding-top: 1.125em !important;
     padding-bottom: 1.125em !important;
diff --git a/resources/js/components/documents/InvoiceDialog.vue b/resources/js/components/documents/InvoiceDialog.vue
index 9931777..981d998 100644
--- a/resources/js/components/documents/InvoiceDialog.vue
+++ b/resources/js/components/documents/InvoiceDialog.vue
@@ -10,7 +10,7 @@
 <script setup lang="ts">
 
 import { ref, computed, watch, onMounted, onUpdated, toRaw } from "vue"
-import { Customer, Invoice, Contact, PaymentTerms, Address, LineItem, PaymentStatus } from "@/types"
+import { Customer, Invoice, Contact, PaymentTerms, Address, LineItem, PaymentStatus, Unit } from "@/types"
 import { newCustomer, newContact, newBillingData } from '@/types/index.d'
 import { toCurrency, toLocalDate, toShortISOString, calcDueDate, toFixedRounded } from '@/lib/utils'
 import axios from 'axios'
@@ -24,7 +24,7 @@ import { Input } from '@/components/ui/crm-input';
 import { DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuSeparator, DropdownMenuTrigger, } from '@/components/ui/dropdown-menu'
 import { StatusBadge, statusBadgeLabels } from '@/components/ui/status-badge'
 import LineItemTable from '@/components/documents/LineItemTable.vue'
-import { Eye, FileText, Trash2, BookUser, User, CodeXml, MessageCircleQuestion, Loader2, Ellipsis, Check, FileCheck, Ban, Logs } from "lucide-vue-next"
+import { Eye, FileText, Trash2, BookUser, User, CodeXml, MessageCircleQuestion, Loader2, Ellipsis, Check, FileCheck, Ban, Logs, Import } from "lucide-vue-next"
 import { alertStore } from "@/stores/alertStore"
 import { GrowingTextarea } from '../ui/growing-textarea'
 import { toast } from "vue-sonner"
@@ -38,7 +38,9 @@ const props = defineProps<{
     modelValue: boolean
 }>()
 
+
 const invoice = ref<Invoice>()
+const units = ref([] as Unit[])
 const customers = ref([] as Customer[])
 const paymentTermsData = ref([] as PaymentTerms[])
 const isDirty = ref(false)
@@ -51,6 +53,8 @@ const alert = alertStore()
 const reminderDialogOpen = ref(false)
 const reminderLoading = ref(false)
 const value = ref<DateValue>() // TODO: name properly
+const fileInput = ref<HTMLInputElement | null>(null);
+
 const emit = defineEmits(['update:modelValue', 'save', 'cancel', 'delete'])
 
 const isOpen = computed({
@@ -74,10 +78,12 @@ onMounted(async () => {
         const promises = [];
         promises.push(axios.get('/api/customers'))
         promises.push(axios.get('/api/paymentterms'))
+        promises.push(axios.get('/api/units'))
         const responses = await Promise.all(promises)
         let responseIndex = 0
         customers.value = responses[responseIndex].data as Customer[]
         paymentTermsData.value = responses[responseIndex + 1].data as PaymentTerms[]
+        units.value = responses[responseIndex + 2].data as Unit[]
     } catch (error) {
         toast.error('Fehler beim Laden der Daten', error || String(error))
     }
@@ -211,14 +217,14 @@ watch(importCustomer,
             invoice.value.billingData.companyName = newValue.companyName
             invoice.value.billingData.vatId = newValue.vatId
 
-            if (!invoice.value.billingData.billingAddress)
-                invoice.value.billingData.billingAddress = newValue.billingAddress as Address
-            if (!invoice.value.billingData.contactFirstName)
-                invoice.value.billingData.contactFirstName = newValue.contacts && newValue.contacts.length > 0 ? newValue.contacts[0].firstName : ''
-            if (!invoice.value.billingData.contactLastName)
-                invoice.value.billingData.contactLastName = newValue.contacts && newValue.contacts.length > 0 ? newValue.contacts[0].lastName : ''
-            if (!invoice.value.billingData.paymentTerms)
-                invoice.value.billingData.paymentTerms = newValue.paymentTerms as PaymentTerms
+            // if (!invoice.value.billingData.billingAddress)
+            invoice.value.billingData.billingAddress = newValue.billingAddress as Address
+            // if (!invoice.value.billingData.contactFirstName)
+            invoice.value.billingData.contactFirstName = newValue.contacts && newValue.contacts.length > 0 ? newValue.contacts[0].firstName : ''
+            // if (!invoice.value.billingData.contactLastName)
+            invoice.value.billingData.contactLastName = newValue.contacts && newValue.contacts.length > 0 ? newValue.contacts[0].lastName : ''
+            // if (!invoice.value.billingData.paymentTerms)
+            invoice.value.billingData.paymentTerms = newValue.paymentTerms as PaymentTerms
 
             // console.warn('trigger invoice watcher')
             invoice.value.customer = newValue
@@ -305,7 +311,7 @@ const save = async () => {
                     title: item.title,
                     description: item.description,
                     quantity: item.quantity,
-                    unit: item.unit,
+                    unitId: item.unitId,
                     price: item.price
                 }))
             }
@@ -470,6 +476,54 @@ const updateLineItems = (newItems: LineItem[]) => {
     // console.groupEnd();
 }
 
+const importLineItems = () => {
+    if (!fileInput.value) {
+        fileInput.value = document.createElement('input');
+        fileInput.value.type = 'file';
+        fileInput.value.accept = '.csv';
+        fileInput.value.addEventListener('change', handleFileUpload);
+    }
+    fileInput.value.click();
+}
+
+const handleFileUpload = async (event: Event) => {
+    const input = event.target as HTMLInputElement;
+    if (!input.files || !input.files[0]) return;
+
+    const file = input.files[0];
+    const formData = new FormData();
+    formData.append('csv', file);
+
+    try {
+        if (!invoice.value || !invoice.value.id) {
+            throw new Error('Rechnung muss gespeichert werden, bevor Positionen importiert werden können');
+        }
+
+        const response = await axios.post(`/api/lineitems/import/${invoice.value.id}`, formData, {
+            headers: {
+                'Content-Type': 'multipart/form-data'
+            }
+        });
+
+        if (invoice.value) {
+            invoice.value.items = response.data;
+            isDirty.value = true;
+        }
+
+        toast.success('Positionen erfolgreich importiert');
+    } catch (error) {
+        console.error('Fehler beim Importieren der Positionen:', error);
+        toast.error('Fehler beim Importieren der Positionen', {
+            description: error instanceof Error ? error.message : String(error)
+        });
+    } finally {
+        // Reset file input
+        if (fileInput.value) {
+            fileInput.value.value = '';
+        }
+    }
+}
+
 </script>
 
 <template>
@@ -553,11 +607,31 @@ const updateLineItems = (newItems: LineItem[]) => {
                             </DropdownMenuTrigger>
 
                             <DropdownMenuContent align="end">
+
+
+                                <!-- Import Items -->
+                                <DropdownMenuItem class="flex items-center justify-between" @click="importLineItems">
+                                    <div class="flex items-center gap-3">
+                                        <Import :strokeWidth="1.5" class="text-muted-foreground" />
+                                        <div class="mr-4 flex flex-col">
+                                            <span>Posten importieren</span>
+                                            <span class="text-xs text-muted-foreground">(CSV)</span>
+                                        </div>
+                                    </div>
+                                    <KbdGroup>
+                                        <Kbd class="visible-mac">⌘</Kbd>
+                                        <Kbd class="visible-pc">Ctrl</Kbd>
+                                        <Kbd>I</Kbd>
+                                    </KbdGroup>
+                                </DropdownMenuItem>
+
+                                <DropdownMenuSeparator />
+
                                 <!-- Preview -->
                                 <DropdownMenuItem v-if="invoice?.paymentStatus == 'draft'"
                                     class="flex items-center justify-between" @click="preview">
                                     <div class="flex items-center gap-3">
-                                        <Eye :strokeWidth="1.5" class="text-current" />
+                                        <Eye :strokeWidth="1.5" class="text-muted-foreground" />
                                         <span class="mr-4">Vorschau</span>
                                     </div>
                                     <KbdGroup>
@@ -595,8 +669,8 @@ const updateLineItems = (newItems: LineItem[]) => {
                                         </div>
                                     </div>
                                 </DropdownMenuItem>
-                                
-                                <DropdownMenuSeparator />
+
+                                <DropdownMenuSeparator v-if="invoice && invoice.paymentStatus != 'draft'" />
 
                                 <!-- Audit -->
                                 <DropdownMenuItem v-if="invoice && invoice.paymentStatus != 'draft'"
@@ -821,8 +895,8 @@ const updateLineItems = (newItems: LineItem[]) => {
                     </div>
 
 
-                    <LineItemTable :lineItems="invoice.items" @update:lineItems="updateLineItems" sticky-top="7"
-                        :isLoading="itemsLoading" class="mt-4" />
+                    <LineItemTable :lineItems="invoice.items" :units="units" @update:lineItems="updateLineItems"
+                        sticky-top="7" :isLoading="itemsLoading" class="mt-4" />
 
                 </div>
 
diff --git a/resources/js/components/documents/LineItemTable.vue b/resources/js/components/documents/LineItemTable.vue
index 77098c2..76be6a7 100644
--- a/resources/js/components/documents/LineItemTable.vue
+++ b/resources/js/components/documents/LineItemTable.vue
@@ -5,7 +5,7 @@
 import { ref, watch, HTMLAttributes, onUpdated } from 'vue'
 import draggable from 'vuedraggable';
 import { cn, toCurrency } from '@/lib/utils';
-import { LineItem } from '@/types';
+import { LineItem, Unit } from '@/types';
 import { newLineItem } from '@/types/index.d'
 import { Table, TableCell, TableFooter, TableHead, TableHeader, TableRow, } from '@/components/ui/table';
 import { Select, SelectContent, SelectGroup, SelectItem, SelectTrigger, SelectValue, } from "@/components/ui/select"
@@ -20,6 +20,7 @@ import { GrowingTextarea } from '@/components/ui/growing-textarea';
 const props = defineProps<{
   isLoading?: boolean,
   lineItems: LineItem[] | undefined,
+  units: Unit[],
   stickyTop: number | string,
   class?: HTMLAttributes['class']
 }>()
@@ -29,7 +30,6 @@ const emit = defineEmits<{
 }>()
 
 const isLoading = ref(props.isLoading || false)
-const units = ref(['Stück', 'Stunden', 'Tage', 'pauschal'])
 const items = ref((props.lineItems ?? []).slice().sort(function (a, b) { return a.position - b.position })) // items only uses props.lineItems as the initial value;
 
 onUpdated(() => {
@@ -165,15 +165,15 @@ const recalculatePositions = () => {
 
             <!-- Einh. -->
             <TableCell class="w-1/8 text-center">
-              <Select v-model="element.unit">
+              <Select v-model="element.unitId">
                 <SelectTrigger
                   class="shadow-none bg-transparent p-1 h-7! dark:bg-transparent hover:bg-background/66 dark:hover:bg-background/66 border-none w-full">
                   <SelectValue placeholder="Einheit" />
                 </SelectTrigger>
                 <SelectContent>
                   <SelectGroup>
-                    <SelectItem v-for="unit in units" :value="unit">
-                      {{ unit }}
+                    <SelectItem v-for="unit in units" :value="unit.id">
+                      {{ unit.name }}
                     </SelectItem>
                   </SelectGroup>
                 </SelectContent>
diff --git a/resources/js/types/index.d.ts b/resources/js/types/index.d.ts
index ec20bb4..aaacfba 100644
--- a/resources/js/types/index.d.ts
+++ b/resources/js/types/index.d.ts
@@ -294,7 +294,8 @@ export interface LineItem {
     title: string,
     description: string,
     quantity: number,
-    unit: string,
+    unitId: number,
+    unit: Unit,
     price: number,
 }
 
@@ -310,7 +311,8 @@ export function newLineItem(isSection: boolean): LineItem {
         title: '',
         description: '',
         quantity: 0,
-        unit: 'Stunden',
+        unitId: 2,
+        unit: newUnit(),
         price: 93.75,
     }
 }
@@ -361,9 +363,9 @@ export interface Unit {
 
 export function newUnit(): Unit {
     return {
-        id: 0,
-        name: '',
-        symbol: null,
+        id: 2,
+        name: 'Stunden',
+        symbol: 'h',
         createdAt: new Date(),
         updatedAt: new Date()
     }
diff --git a/resources/views/invoice.blade.php b/resources/views/invoice.blade.php
index 49e6492..af3d40e 100644
--- a/resources/views/invoice.blade.php
+++ b/resources/views/invoice.blade.php
@@ -54,9 +54,9 @@
 
     <address>
         <div class="sender">
-            {{ $companyname }},
+            {{ $companyName }},
             {{ $companyAddress['lineOne'] }},
-            @if($companyAddress['lineOne'])
+            @if($companyAddress['lineTwo'])
             {{ $companyAddress['lineTwo'] }}
             @endif
             {{ $companyAddress['postalCode'] }}
@@ -170,7 +170,7 @@
                         {{ $item['description'] }}
                     </td>
                     <td>@toCommaFloat($item['quantity'])</td>
-                    <td>{{ $item['unit'] }}</td>
+                    <td>{{ $item['unit']['name'] }}</td>
                     <td>@toCurrency($item['price'])</td>
                     <td>@toCurrency($item['quantity'] * $item['price'])</td>
                 </tr>
diff --git a/routes/api.php b/routes/api.php
index f753aa0..63b4d19 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -9,6 +9,7 @@
 use App\Http\Controllers\ProductController;
 use App\Http\Controllers\SettingController;
 use App\Http\Controllers\TodoController;
+use App\Http\Controllers\UnitController;
 use App\Mail\OrderConfirmation;
 use App\Services\CaldavService;
 
@@ -46,7 +47,7 @@
 Route::get('/invoices/{id}/remind', [InvoiceController::class, 'remind']);
 
 Route::get('/lineitems/{invoiceId}', [LineItemController::class, 'index']);
-
+Route::post('/lineitems/import/{invoiceId}', [LineItemController::class, 'importFromCsv']);
 
 Route::get('/offers/{id}/confirm', function ($id) {
     // $offer = offerController::single($id);
@@ -96,3 +97,5 @@
 
 Route::get('/settings', [SettingController::class, 'index']);
 Route::post('/settings', [SettingController::class, 'update']);
+
+Route::apiResource('/units', UnitController::class);