diff --git a/product_harmonized_system_delivery/__init__.py b/product_harmonized_system_delivery/__init__.py
index e69de29..0650744 100644
--- a/product_harmonized_system_delivery/__init__.py
+++ b/product_harmonized_system_delivery/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/product_harmonized_system_delivery/models/__init__.py b/product_harmonized_system_delivery/models/__init__.py
new file mode 100644
index 0000000..9649db7
--- /dev/null
+++ b/product_harmonized_system_delivery/models/__init__.py
@@ -0,0 +1 @@
+from . import product
diff --git a/product_harmonized_system_delivery/models/product.py b/product_harmonized_system_delivery/models/product.py
new file mode 100644
index 0000000..5b65cf2
--- /dev/null
+++ b/product_harmonized_system_delivery/models/product.py
@@ -0,0 +1,11 @@
+# Copyright 2017 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import fields, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    # this field cannot be stored because hs_code_id is company dependent
+    hs_code = fields.Char(related="hs_code_id.hs_code", readonly=True, store=False)