diff --git a/sf_maintenance/views/maintenance_equipment_category_views.xml b/sf_maintenance/views/maintenance_equipment_category_views.xml
index fa9c571c..2cdb47a3 100644
--- a/sf_maintenance/views/maintenance_equipment_category_views.xml
+++ b/sf_maintenance/views/maintenance_equipment_category_views.xml
@@ -18,7 +18,7 @@
         <field name="inherit_id" ref="maintenance.hr_equipment_category_view_form"/>
         <field name="arch" type="xml">
             <xpath expr="//field[@name='technician_user_id']" position="before">
-                <field name="equipment_type" required='1'/>
+                <field name="equipment_type"/>
                 <field name="equipment_type_code" required='1'/>
             </xpath>
         </field>
diff --git a/sf_manufacturing/models/product_template.py b/sf_manufacturing/models/product_template.py
index 285d43f0..8d9ce216 100644
--- a/sf_manufacturing/models/product_template.py
+++ b/sf_manufacturing/models/product_template.py
@@ -6,8 +6,8 @@ import os
 from odoo import models, fields, api, _
 from odoo.exceptions import ValidationError
 from odoo.modules import get_resource_path
-from OCC.Extend.DataExchange import read_step_file
-from OCC.Extend.DataExchange import write_stl_file
+#from OCC.Extend.DataExchange import read_step_file
+#from OCC.Extend.DataExchange import write_stl_file
 
 
 class ResProductMo(models.Model):
diff --git a/sf_sale/models/auto_quatotion_common.py b/sf_sale/models/auto_quatotion_common.py
index 09ea3f0f..1b29c6d2 100644
--- a/sf_sale/models/auto_quatotion_common.py
+++ b/sf_sale/models/auto_quatotion_common.py
@@ -2,7 +2,7 @@
 import logging
 from odoo.modules import get_resource_path
 from odoo import fields, models, api
-from quatotion import readSql, feature_recognize, auto_quatotion
+#from quatotion import readSql, feature_recognize, auto_quatotion
 
 __author__ = 'jinling.yang'
 _logger = logging.getLogger(__name__)
diff --git a/sf_sale/models/quick_easy_order.py b/sf_sale/models/quick_easy_order.py
index 1e5f274c..5ec1fd52 100644
--- a/sf_sale/models/quick_easy_order.py
+++ b/sf_sale/models/quick_easy_order.py
@@ -5,8 +5,8 @@ import os
 import json
 from datetime import datetime
 import requests
-from OCC.Extend.DataExchange import read_step_file
-from OCC.Extend.DataExchange import write_stl_file
+#from OCC.Extend.DataExchange import read_step_file
+#from OCC.Extend.DataExchange import write_stl_file
 from odoo import models, fields, api
 from odoo.modules import get_resource_path
 from odoo.exceptions import ValidationError, UserError