diff --git a/CHANGELOG.md b/CHANGELOG.md
index 774beef..36caea9 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,20 @@
 
 Alle wesentlichen Änderungen an diesem Projekt werden in dieser Datei dokumentiert.
 
+## [4.3] - 2026-03-03
+
+### Behoben
+- **Datanorm-Preisvergleich**: Korrekte Preisberechnung mit Kupferzuschlag
+  - Problem: Datanorm-Preise enthalten nur Materialpreis, kein Kupferzuschlag
+  - Lösung: Kupferzuschlag aus Produkt-Extrafields wird zu Datanorm-Preis addiert
+  - Vergleich jetzt: Datanorm+Kupfer vs. aktueller Dolibarr-Preis
+  - Zeigt Aufschlüsselung: "Datanorm-Preis + Kupferzuschlag = Gesamtpreis"
+
+### Hinzugefügt
+- **Kabel-Filter**: Checkbox "Kabel ausblenden" in Datanorm-Vorschau
+  - Filtert Kabel-Produkte aus der Anzeige (basierend auf Warengruppe)
+  - Erleichtert Fokus auf Standard-Artikel
+
 ## [4.2] - 2026-03-02
 
 ### Behoben
diff --git a/README.md b/README.md
index a6fec4d..d7ea790 100755
--- a/README.md
+++ b/README.md
@@ -104,7 +104,11 @@ Available in:
 
 See [CHANGELOG.md](CHANGELOG.md) for detailed version history.
 
-### 4.2 (Current)
+### 4.3 (Current)
+- Fixed Datanorm price comparison with copper surcharge calculation
+- Added cable filter for Datanorm preview
+
+### 4.2
 - PDF attachments now properly linked to supplier invoices via ECM database
 - Most expensive item shown as invoice label in supplier invoice list
 
diff --git a/core/modules/modImportZugferd.class.php b/core/modules/modImportZugferd.class.php
index a91f51e..7249682 100755
--- a/core/modules/modImportZugferd.class.php
+++ b/core/modules/modImportZugferd.class.php
@@ -76,7 +76,7 @@ class modImportZugferd extends DolibarrModules
 		$this->editor_squarred_logo = '';					// Must be image filename into the module/img directory followed with @modulename. Example: 'myimage.png@importzugferd'
 
 		// Possible values for version are: 'development', 'experimental', 'dolibarr', 'dolibarr_deprecated', 'experimental_deprecated' or a version string like 'x.y.z'
-		$this->version = '4.2';
+		$this->version = '4.3';
 		// Url to the file with your last numberversion of this module
 		//$this->url_last_version = 'http://www.example.com/versionmodule.txt';
 
diff --git a/import.php b/import.php
index f3eb69f..552eb35 100755
--- a/import.php
+++ b/import.php
@@ -1877,15 +1877,32 @@ if ($action == 'previewdatanorm' && $id > 0) {
                 // Only show suppliers that don't already have a price for this product
                 $supplierAlternatives = array();
                 $existingPriceSuppliers = array();
+                $currentDolibarrPrice = 0; // Current supplier price from Dolibarr
 
-                // If product exists, load existing supplier prices
+                // Load existing product's copper surcharge for price comparison
+                $productCopperSurcharge = 0;
                 if ($existingProductId > 0) {
-                    $sqlExisting = "SELECT fk_soc FROM ".MAIN_DB_PREFIX."product_fournisseur_price";
+                    $sqlExisting = "SELECT fk_soc, unitprice FROM ".MAIN_DB_PREFIX."product_fournisseur_price";
                     $sqlExisting .= " WHERE fk_product = ".(int)$existingProductId;
                     $resExisting = $db->query($sqlExisting);
                     if ($resExisting) {
                         while ($objEx = $db->fetch_object($resExisting)) {
                             $existingPriceSuppliers[$objEx->fk_soc] = true;
+                            // Load current invoice supplier's Dolibarr price for comparison
+                            if ($objEx->fk_soc == $import->fk_soc) {
+                                $currentDolibarrPrice = (float)$objEx->unitprice;
+                            }
+                        }
+                    }
+
+                    // Load copper surcharge from product extrafields
+                    $sqlCopper = "SELECT kupferzuschlag FROM ".MAIN_DB_PREFIX."product_extrafields";
+                    $sqlCopper .= " WHERE fk_object = ".(int)$existingProductId;
+                    $resCopper = $db->query($sqlCopper);
+                    if ($resCopper && $db->num_rows($resCopper) > 0) {
+                        $objCopper = $db->fetch_object($resCopper);
+                        if (!empty($objCopper->kupferzuschlag) && $objCopper->kupferzuschlag > 0) {
+                            $productCopperSurcharge = (float)$objCopper->kupferzuschlag;
                         }
                     }
                 }
@@ -1899,11 +1916,16 @@ if ($action == 'previewdatanorm' && $id > 0) {
                     $altSupplier = new Societe($db);
                     $altSupplier->fetch($altResult['fk_soc']);
 
+                    // Datanorm base price (per unit)
                     $altPurchasePrice = $altResult['price'];
                     if ($altResult['price_unit'] > 1) {
                         $altPurchasePrice = $altResult['price'] / $altResult['price_unit'];
                     }
 
+                    // Add copper surcharge from existing product for comparison
+                    // Datanorm has only material price, not copper surcharge
+                    $altPurchasePriceWithCopper = $altPurchasePrice + $productCopperSurcharge;
+
                     $supplierAlternatives[] = array(
                         'datanorm_id' => $altResult['id'],
                         'fk_soc' => $altResult['fk_soc'],
@@ -1912,7 +1934,9 @@ if ($action == 'previewdatanorm' && $id > 0) {
                         'short_text1' => $altResult['short_text1'],
                         'price' => $altResult['price'],
                         'price_unit' => $altResult['price_unit'],
-                        'purchase_price' => $altPurchasePrice,
+                        'purchase_price' => $altPurchasePriceWithCopper,
+                        'datanorm_base_price' => $altPurchasePrice, // Without copper
+                        'copper_surcharge' => $productCopperSurcharge,
                         'ean' => $altResult['ean'],
                         'manufacturer_ref' => $altResult['manufacturer_ref'],
                         'is_invoice_supplier' => ($altResult['fk_soc'] == $import->fk_soc),
@@ -1933,7 +1957,8 @@ if ($action == 'previewdatanorm' && $id > 0) {
                     'datanorm_price' => $datanorm->price,
                     'datanorm_price_unit' => $datanorm->price_unit,
                     'datanorm_ean' => $datanorm->ean,
-                    'purchase_price' => $purchasePrice,
+                    'purchase_price' => $currentDolibarrPrice, // Current Dolibarr price for comparison
+                    'datanorm_purchase_price' => $purchasePrice, // New Datanorm price
                     'selling_price' => $sellingPrice,
                     'copper_surcharge' => $copperSurchargeForPrice,
                     'existing_product_id' => $existingProductId,
@@ -2588,6 +2613,18 @@ if ($action == 'edit' && $import->id > 0) {
                 $datanormSearch = new Datanorm($db);
                 $allCatalogResults = array();
 
+                // Load copper surcharge from product extrafields for price comparison
+                $productCopperSurcharge = 0;
+                $sqlCopper = "SELECT kupferzuschlag FROM ".MAIN_DB_PREFIX."product_extrafields";
+                $sqlCopper .= " WHERE fk_object = ".(int)$line->fk_product;
+                $resCopper = $db->query($sqlCopper);
+                if ($resCopper && $db->num_rows($resCopper) > 0) {
+                    $objCopper = $db->fetch_object($resCopper);
+                    if (!empty($objCopper->kupferzuschlag) && $objCopper->kupferzuschlag > 0) {
+                        $productCopperSurcharge = (float)$objCopper->kupferzuschlag;
+                    }
+                }
+
                 // Suche mit Artikelnummer - die Funktion nutzt dann die EAN für Cross-Catalog
                 if (!empty($line->supplier_ref)) {
                     $allCatalogResults = $datanormSearch->searchByArticleNumber($line->supplier_ref, $import->fk_soc, true, 10);
@@ -2601,11 +2638,16 @@ if ($action == 'edit' && $import->id > 0) {
                             $altSupplier = new Societe($db);
                             $altSupplier->fetch($catalogResult['fk_soc']);
 
+                            // Datanorm base price (per unit)
                             $altPurchasePrice = $catalogResult['price'];
                             if ($catalogResult['price_unit'] > 1) {
                                 $altPurchasePrice = $catalogResult['price'] / $catalogResult['price_unit'];
                             }
 
+                            // Add copper surcharge from existing product for comparison
+                            // Datanorm has only material price, not copper surcharge
+                            $altPurchasePriceWithCopper = $altPurchasePrice + $productCopperSurcharge;
+
                             $missingSuppliers[] = array(
                                 'datanorm_id' => $catalogResult['id'],
                                 'fk_soc' => $catalogResult['fk_soc'],
@@ -2613,7 +2655,9 @@ if ($action == 'edit' && $import->id > 0) {
                                 'article_number' => $catalogResult['article_number'],
                                 'price' => $catalogResult['price'],
                                 'price_unit' => $catalogResult['price_unit'],
-                                'purchase_price' => $altPurchasePrice,
+                                'purchase_price' => $altPurchasePriceWithCopper,
+                                'datanorm_base_price' => $altPurchasePrice, // Without copper
+                                'copper_surcharge' => $productCopperSurcharge,
                                 'ean' => $catalogResult['ean'],
                             );
                         }
@@ -2862,12 +2906,30 @@ if ($action == 'edit' && $import->id > 0) {
         print '<div class="titre" style="margin-bottom: 10px;">';
         print '<i class="fas fa-database paddingright"></i>'.$langs->trans('DatanormPreview');
         print ' <span class="badge badge-info">'.count($datanormPreviewMatches).' '.$langs->trans('Matches').'</span>';
+
+        // Filter: Kabel ausblenden (in eigenem Form für sofortiges Submit)
+        print '<span style="margin-left: 15px;">';
+        print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'" style="display: inline;">';
+        print '<input type="hidden" name="token" value="'.newToken().'">';
+        print '<input type="hidden" name="action" value="previewdatanorm">';
+        print '<input type="hidden" name="id" value="'.$import->id.'">';
+        $hideCables = GETPOST('hide_cables', 'int');
+        $checked = $hideCables ? ' checked' : '';
+        print '<label style="font-weight: normal; cursor: pointer;">';
+        print '<input type="checkbox" id="hide_cables" name="hide_cables" value="1"'.$checked.' onchange="this.form.submit();">';
+        print ' <span style="color: #666;">Kabel ausblenden</span>';
+        print '</label>';
+        print '</form>';
+        print '</span>';
         print '</div>';
 
         print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'" id="datanorm_confirm_form">';
         print '<input type="hidden" name="token" value="'.newToken().'">';
         print '<input type="hidden" name="action" value="createallfromdatanorm">';
         print '<input type="hidden" name="id" value="'.$import->id.'">';
+        if ($hideCables) {
+            print '<input type="hidden" name="hide_cables" value="1">';
+        }
 
         print '<table class="noborder centpercent">';
         print '<tr class="liste_titre">';
@@ -2883,7 +2945,18 @@ if ($action == 'edit' && $import->id > 0) {
 
         $countCreate = 0;
         $countAssign = 0;
+        $hideCables = GETPOST('hide_cables', 'int');
         foreach ($datanormPreviewMatches as $match) {
+            // Filter: Kabel ausblenden wenn gewünscht
+            if ($hideCables) {
+                // Load Datanorm product group to check if it's a cable
+                $datanormObj = new Datanorm($db);
+                $datanormObj->fetch($match['datanorm_id']);
+                if (isCableProduct($datanormObj)) {
+                    continue; // Skip cables
+                }
+            }
+
             $rowClass = ($match['action'] == 'assign') ? 'background-color: #d9edf7;' : 'background-color: #dff0d8;';
 
             print '<tr class="oddeven" style="'.$rowClass.'">';
@@ -3033,6 +3106,10 @@ if ($action == 'edit' && $import->id > 0) {
                     if ($alt['price_unit'] > 1) {
                         print '<span class="small" style="color: #666;">'.price($alt['price']).'/'.$alt['price_unit'].'</span><br>';
                     }
+                    // Show breakdown: Datanorm base price + copper surcharge
+                    if (!empty($alt['copper_surcharge']) && $alt['copper_surcharge'] > 0) {
+                        print '<span class="small" style="color: #666;">'.price($alt['datanorm_base_price']).' + '.price($alt['copper_surcharge']).' Kupfer</span><br>';
+                    }
                     print '<strong>'.price($alt['purchase_price']).'</strong>';
                     print '</td>';