diff --git a/bemade_fsm/models/task.py b/bemade_fsm/models/task.py
index 7ee4a71..a751766 100644
--- a/bemade_fsm/models/task.py
+++ b/bemade_fsm/models/task.py
@@ -5,3 +5,7 @@ class Task(models.Model):
     _inherit = "project.task"
 
     equipment_id = fields.Many2one("bemade_fsm.equipment", string="Target Equipment")
+
+    work_order_contacts = fields.Many2many(related='sale_line_id.order_id.work_order_contacts')
+    site_contacts = fields.Many2many(related='sale_line_id.order_id.site_contacts')
+    equipment_ids = fields.Many2many(related='sale_line_id.order_id.equipment_ids')
diff --git a/bemade_fsm/tests/__init__.py b/bemade_fsm/tests/__init__.py
index fc3738e..955686d 100644
--- a/bemade_fsm/tests/__init__.py
+++ b/bemade_fsm/tests/__init__.py
@@ -3,3 +3,4 @@ from . import test_task_template
 from . import test_task_template_sale_order
 from . import test_equipment
 from . import test_fsm_contact_setting
+from . import test_so_task_contacts
diff --git a/bemade_fsm/tests/test_so_task_contacts.py b/bemade_fsm/tests/test_so_task_contacts.py
new file mode 100644
index 0000000..79d4a5b
--- /dev/null
+++ b/bemade_fsm/tests/test_so_task_contacts.py
@@ -0,0 +1,37 @@
+from .test_task_template_sale_order import TestTaskTemplateSalesOrder
+from odoo import Command
+
+
+class TestSaleOrderTaskContacts(TestTaskTemplateSalesOrder):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        Partner = cls.env['res.partner']
+        cls.partner2 = Partner.create({
+            'name': 'New Partner',
+            'company_type': 'company',
+        })
+        cls.contact = Partner.create({
+            'name': 'Contact',
+            'company_type': 'person',
+            'parent_id': cls.partner2.id,
+        })
+
+    def _test_contacts(self, field):
+        def ga(obj):
+            return getattr(obj, field)
+        self.partner2.write({field: [Command.set([self.contact.id])]})
+        self.sale_order1.write(
+            {'partner_id': self.partner2.id, field: [Command.set(ga(self.partner2).ids)]})
+        so = self.sale_order1
+        self.assertTrue(ga(so))
+        so.action_confirm()
+        task = so.order_line[0].task_id
+        self.assertTrue(ga(task))
+        self.assertTrue(ga(task) == ga(so))
+
+    def test_work_order_contacts_on_task(self):
+        self._test_contacts('work_order_contacts')
+
+    def test_site_contacts_on_task(self):
+        self._test_contacts('site_contacts')
\ No newline at end of file
diff --git a/bemade_fsm/tests/test_task_template_sale_order.py b/bemade_fsm/tests/test_task_template_sale_order.py
index e2fe05e..9fde384 100644
--- a/bemade_fsm/tests/test_task_template_sale_order.py
+++ b/bemade_fsm/tests/test_task_template_sale_order.py
@@ -84,4 +84,4 @@ class TestTaskTemplateSalesOrder(TestTaskTemplateCommon):
         sol2 = so.order_line[1]
         assert_structure(sol1)
         assert_structure(sol2)
-
+        
\ No newline at end of file