diff --git a/fusion_plating/fusion_plating_reports/__manifest__.py b/fusion_plating/fusion_plating_reports/__manifest__.py
index a65c6085..948a2b2e 100644
--- a/fusion_plating/fusion_plating_reports/__manifest__.py
+++ b/fusion_plating/fusion_plating_reports/__manifest__.py
@@ -3,7 +3,7 @@
 # License OPL-1 (Odoo Proprietary License v1.0)
 {
     'name': 'Fusion Plating — Reports',
-    'version': '19.0.11.28.2',
+    'version': '19.0.11.29.0',
     'category': 'Manufacturing/Plating',
     'summary': 'PDF reports for Fusion Plating: quote, SO, WO, packing, BoL, CoC, invoice, receipt, quality + compliance.',
     'depends': [
diff --git a/fusion_plating/fusion_plating_reports/report/report_coc.xml b/fusion_plating/fusion_plating_reports/report/report_coc.xml
index 2f8fa8c8..de3e14ea 100644
--- a/fusion_plating/fusion_plating_reports/report/report_coc.xml
+++ b/fusion_plating/fusion_plating_reports/report/report_coc.xml
@@ -138,6 +138,13 @@
             .fp-coc td { padding: 5px 8px; vertical-align: top; font-size: 8.5pt; }
             .fp-coc .text-center { text-align: center; }
             .fp-coc .text-end { text-align: right; }
+            /* Bilingual stacked column titles — English (bold) over the
+               French translation (italic grey), same pattern as the SO
+               report's narrow-cell headers. Added 2026-05-28. */
+            .fp-coc .fp-bl-en-stk { display: block; font-weight: bold; }
+            .fp-coc .fp-bl-fr-stk { display: block; font-weight: normal;
+                                    font-style: italic; color: #555;
+                                    font-size: 80%; margin-top: 1px; }
             .fp-coc .cert-statement-box { padding: 0; font-size: 8.5pt; }
             .fp-coc .cert-statement-box h4 { margin: 0 0 6px 0; font-size: 9.5pt; font-weight: bold; }
             .fp-coc .signature-img { max-height: 2.2cm; max-width: 7cm; }
@@ -232,16 +239,16 @@
                 <thead>
                     <tr>
                         <th style="width: 33%;">
-                            <span t-if="not is_fr">Date of Certification</span>
-                            <span t-if="is_fr">Date du certificat</span>
+                            <span class="fp-bl-en-stk">Date of Certification</span>
+                            <span class="fp-bl-fr-stk">Date du certificat</span>
                         </th>
                         <th style="width: 34%;">
-                            <span t-if="not is_fr">Generated By</span>
-                            <span t-if="is_fr">Créé par</span>
+                            <span class="fp-bl-en-stk">Generated By</span>
+                            <span class="fp-bl-fr-stk">Créé par</span>
                         </th>
                         <th style="width: 33%;">
-                            <span t-if="not is_fr">Work Order #</span>
-                            <span t-if="is_fr">Bon de travail</span>
+                            <span class="fp-bl-en-stk">Work Order #</span>
+                            <span class="fp-bl-fr-stk">Bon de travail</span>
                         </th>
                     </tr>
                 </thead>
@@ -270,28 +277,32 @@
                 <thead>
                     <tr>
                         <th style="width: 20%;">
-                            <span t-if="not is_fr">Part Number / Line Item</span>
-                            <span t-if="is_fr">No. de pièce / Ligne</span>
+                            <span class="fp-bl-en-stk">Part Number / Line Item</span>
+                            <span class="fp-bl-fr-stk">No. de pièce / Ligne</span>
+                            <span class="fp-bl-en-stk" style="margin-top: 4px;">Description</span>
+                            <span class="fp-bl-fr-stk">Description</span>
+                            <span class="fp-bl-en-stk" style="margin-top: 4px;">Serial Number</span>
+                            <span class="fp-bl-fr-stk">Numéro de série</span>
                         </th>
                         <th style="width: 32%;">
-                            <span t-if="not is_fr">Process</span>
-                            <span t-if="is_fr">Procédé</span>
+                            <span class="fp-bl-en-stk">Process</span>
+                            <span class="fp-bl-fr-stk">Procédé</span>
                         </th>
                         <th style="width: 16%;">
-                            <span t-if="not is_fr">Customer PO</span>
-                            <span t-if="is_fr">Bon de commande</span>
+                            <span class="fp-bl-en-stk">Customer PO</span>
+                            <span class="fp-bl-fr-stk">Bon de commande</span>
                         </th>
                         <th style="width: 10%;">
-                            <span t-if="not is_fr">Shipped</span>
-                            <span t-if="is_fr">Expédié</span>
+                            <span class="fp-bl-en-stk">Shipped</span>
+                            <span class="fp-bl-fr-stk">Expédié</span>
                         </th>
                         <th style="width: 10%;">
-                            <span t-if="not is_fr">NC Qty</span>
-                            <span t-if="is_fr">Qté NC</span>
+                            <span class="fp-bl-en-stk">NC Qty</span>
+                            <span class="fp-bl-fr-stk">Qté NC</span>
                         </th>
                         <th style="width: 12%;">
-                            <span t-if="not is_fr">Customer Job No.</span>
-                            <span t-if="is_fr">Bon de travail client</span>
+                            <span class="fp-bl-en-stk">Customer Job No.</span>
+                            <span class="fp-bl-fr-stk">Bon de travail client</span>
                         </th>
                     </tr>
                 </thead>