diff --git a/fusion_plating/fusion_plating_certificates/__manifest__.py b/fusion_plating/fusion_plating_certificates/__manifest__.py
index d9f2ca1a..19257427 100644
--- a/fusion_plating/fusion_plating_certificates/__manifest__.py
+++ b/fusion_plating/fusion_plating_certificates/__manifest__.py
@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating — Certificates',
-    'version': '19.0.9.1.0',
+    'version': '19.0.9.2.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Certificate registry for CoC, thickness reports, and quality documents.',
     'description': """
diff --git a/fusion_plating/fusion_plating_certificates/models/fp_certificate.py b/fusion_plating/fusion_plating_certificates/models/fp_certificate.py
index 2fa39b86..9d7e2447 100644
--- a/fusion_plating/fusion_plating_certificates/models/fp_certificate.py
+++ b/fusion_plating/fusion_plating_certificates/models/fp_certificate.py
@@ -777,6 +777,49 @@ class FpCertificate(models.Model):
             desc = line.name
         return (desc or '').strip()
 
+    def _fp_resolve_part_identity(self):
+        """Return (part_number, part_name, serials) for the CoC line-item
+        cell's three lines (client request 2026-05-28).
+
+          - part_number: the cert's own field, falling back to the job's
+            part_catalog part_number.
+          - part_name:   the job's part_catalog.name.
+          - serials:     the matching SO line's x_fc_serial_ids names,
+            comma-joined.
+
+        All cross-module access is guarded so the method stays safe even
+        if the jobs / configurator layers aren't installed (returns ''
+        for the unresolved pieces).
+        """
+        self.ensure_one()
+        job = self.x_fc_job_id if 'x_fc_job_id' in self._fields else False
+        part = (job.part_catalog_id
+                if job and 'part_catalog_id' in job._fields else False)
+        part_number = (
+            self.part_number
+            or (part.part_number
+                if part and 'part_number' in part._fields else '')
+            or ''
+        )
+        part_name = (part.name if part and 'name' in part._fields else '') or ''
+        serials = ''
+        so = self.sale_order_id or (
+            job.sale_order_id
+            if job and 'sale_order_id' in job._fields else False
+        )
+        if so:
+            lines = so.order_line.filtered(lambda l: not l.display_type)
+            line = self.env['sale.order.line']
+            if part and lines and 'x_fc_part_catalog_id' in lines._fields:
+                line = lines.filtered(
+                    lambda l: l.x_fc_part_catalog_id == part
+                )[:1]
+            if not line:
+                line = lines[:1]
+            if line and 'x_fc_serial_ids' in line._fields and line.x_fc_serial_ids:
+                serials = ', '.join(line.x_fc_serial_ids.mapped('name'))
+        return (part_number, part_name, serials)
+
     def _fp_render_and_attach_pdf(self):
         """Render the CoC PDF via the bound report action, OPTIONALLY
         merge the Fischerscope thickness report PDF (uploaded by the
diff --git a/fusion_plating/fusion_plating_reports/__manifest__.py b/fusion_plating/fusion_plating_reports/__manifest__.py
index 5c27ac36..f631362a 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': '19.0.11.30.0',
+    'version': '19.0.11.31.0',
     '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 777c1645..cb991024 100644
--- a/fusion_plating/fusion_plating_reports/report/report_coc.xml
+++ b/fusion_plating/fusion_plating_reports/report/report_coc.xml
@@ -239,16 +239,13 @@
                 <thead>
                     <tr>
                         <th style="width: 33%;">
-                            <span class="fp-bl-en-stk">Date of Certification</span>
-                            <span class="fp-bl-fr-stk">Date du certificat</span>
+                            <span class="fp-bl-en">Date of Certification</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Date du certificat</span>
                         </th>
                         <th style="width: 34%;">
-                            <span class="fp-bl-en-stk">Generated By</span>
-                            <span class="fp-bl-fr-stk">Créé par</span>
+                            <span class="fp-bl-en">Generated By</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Créé par</span>
                         </th>
                         <th style="width: 33%;">
-                            <span class="fp-bl-en-stk">Work Order #</span>
-                            <span class="fp-bl-fr-stk">Bon de travail</span>
+                            <span class="fp-bl-en">Work Order #</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Bon de travail</span>
                         </th>
                     </tr>
                 </thead>
@@ -276,39 +273,36 @@
                                           page-break-inside: avoid;">
                 <thead>
                     <tr>
-                        <th style="width: 20%;">
-                            <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 style="width: 20%; line-height: 1.25;">
+                            <div><span class="fp-bl-en">Part Number</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">No. de pièce</span></div>
+                            <div><span class="fp-bl-en">Description</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Description</span></div>
+                            <div><span class="fp-bl-en">Serial Number</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Numéro de série</span></div>
                         </th>
                         <th style="width: 32%;">
-                            <span class="fp-bl-en-stk">Process</span>
-                            <span class="fp-bl-fr-stk">Procédé</span>
+                            <span class="fp-bl-en">Process</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Procédé</span>
                         </th>
                         <th style="width: 16%;">
-                            <span class="fp-bl-en-stk">Customer PO</span>
-                            <span class="fp-bl-fr-stk">Bon de commande</span>
+                            <span class="fp-bl-en">Customer PO</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Bon de commande</span>
                         </th>
                         <th style="width: 10%;">
-                            <span class="fp-bl-en-stk">Shipped</span>
-                            <span class="fp-bl-fr-stk">Expédié</span>
+                            <span class="fp-bl-en">Shipped</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Expédié</span>
                         </th>
                         <th style="width: 10%;">
-                            <span class="fp-bl-en-stk">NC Qty</span>
-                            <span class="fp-bl-fr-stk">Qté NC</span>
+                            <span class="fp-bl-en">NC Qty</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Qté NC</span>
                         </th>
                         <th style="width: 12%;">
-                            <span class="fp-bl-en-stk">Customer Job No.</span>
-                            <span class="fp-bl-fr-stk">Bon de travail client</span>
+                            <span class="fp-bl-en">Customer Job No.</span><span class="fp-bl-sep">/</span><span class="fp-bl-fr">Bon de travail client</span>
                         </th>
                     </tr>
                 </thead>
                 <tbody>
                     <tr>
-                        <td class="text-center"><t t-esc="doc.part_number or '-'"/></td>
+                        <td class="text-center" style="line-height: 1.3;">
+                            <t t-set="pid" t-value="doc._fp_resolve_part_identity()"/>
+                            <div><t t-esc="pid[0] or '-'"/></div>
+                            <div><t t-esc="pid[1] or '-'"/></div>
+                            <div><t t-esc="pid[2] or '-'"/></div>
+                        </td>
                         <td>
                             <!-- Customer-facing description is the cert's
                                  spec / certificate info (client request