diff --git a/__init__.py b/__init__.py
index 57b6124..2be1e7c 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,9 +1,9 @@
 from trytond.pool import Pool
-from . import product
-from . import sale
+from . import product, sale, equipment
 
 def register():
     Pool.register(
         product.Template,
         sale.SaleLine,
+        equipment.OpticalEquipment,
         module='optical_equipment', type_='model')
diff --git a/product.py b/product.py
index 172f604..f0d12e9 100644
--- a/product.py
+++ b/product.py
@@ -43,6 +43,21 @@ class Template(metaclass=PoolMeta):
                                 'Main tecnology')
     calibration = fields.Boolean("Apply calibration")
     observation = fields.Text('Observation')
+    mark_category = fields.Many2One('product.category', 'Mark')
+    model_category  = fields.Many2One('product.category', "Model")
+    reference = fields.Char("Reference", size=None, required=True)
+    origin_country = fields.Many2One('country.country',"Origin Country")
+    software_version = fields.Char(
+        "Software version", size=None, required=True)
+    useful_life = fields.Char(
+        "Useful life", size=None, required=True)
+    warranty = fields.Char(
+        "Warranty", size=None, required=True)
+    serial = fields.Char(
+        "Serial", size=None, required=True)
+    health_register = fields.Char(
+        "Serial", size=None, required=True)
+    refurbish = fields.Boolean('Refurbish')
 
     @staticmethod
     def default_equipment():
diff --git a/sale.py b/sale.py
index 869263a..1943e82 100644
--- a/sale.py
+++ b/sale.py
@@ -1,24 +1,7 @@
 from trytond.pool import Pool, PoolMeta
-from trytond.model import ModelView, ModelSQL
-from trytond.model import fields
+from trytond.model import ModelView, ModelSQL, fields
 
 
-class SaleLine(ModelSQL, ModelView, metaclass=PoolMeta):
+class SaleLine(metaclass=PoolMeta):
     'SaleLine'
     __name__ = 'sale.line'
-
-    mark_category = fields.Many2One('product.category', 'Mark')
-    model_category  = fields.Many2One('product.category', "Model")
-    reference = fields.Char("Reference", size=None, required=True)
-    origin_country = fields.Many2One('country.country',"Origin Country")
-    software_version = fields.Char(
-        "Software version", size=None, required=True)
-    useful_life = fields.Char(
-        "Useful life", size=None, required=True)
-    warranty = fields.Char(
-        "Warranty", size=None, required=True)
-    serial = fields.Char(
-        "Serial", size=None, required=True)
-    health_register = fields.Char(
-        "Serial", size=None, required=True)
-    refurbish = fields.Boolean('Refurbish')
diff --git a/tryton.cfg b/tryton.cfg
index 55c6d6b..75a9e9e 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -2,9 +2,12 @@
 version=6.0
 depends:
     ir
+    party
+    company
     product
     sale
     country
 xml:
     product.xml
+    equipment.xml
     sale.xml
\ No newline at end of file
diff --git a/view/sale_line_form.xml b/view/sale_line_form.xml
index 2f35b76..88e7915 100644
--- a/view/sale_line_form.xml
+++ b/view/sale_line_form.xml
@@ -4,24 +4,6 @@
     <xpath
 	expr="/form/notebook/page[@id='notes']" position="before">
 	<page string="Equipment" id="equipment">
-	    <label name="mark_category"/>
-	    <field name="mark_category"/>
-	    <label name="model_category"/>
-	    <field name="model_category"/>
-	    <label name="refurbish"/>
-	    <field name="refurbish"/>
-	    <label name="software_version"/>
-	    <field name="software_version"/>
-	    <label name="useful_life"/>
-	    <field name="useful_life"/>
-	    <label name="warranty"/>
-	    <field name="warranty"/>
-	    <label name="serial"/>
-	    <field name="serial"/>
-	    <label name="health_register"/>
-	    <field name="health_register"/>
-	    <label name="origin_country"/>
-	    <field name="origin_country"/>
 	</page>
     </xpath>
 </data>