diff --git a/__manifest__.py b/__manifest__.py
index 58443d0..e33eb37 100755
--- a/__manifest__.py
+++ b/__manifest__.py
@@ -10,13 +10,7 @@
     "website": "http://rydlab.ru",
     "category": "Invoicing & Payments",
     "version": "0.2.0",
-    "depends": [
-        "base",
-        "contacts",
-        "hr",
-        "russian_requisites",
-        "sale",
-    ],
+    "depends": ["base", "contacts", "hr", "russian_requisites", "sale", "sale_margin",],
     "data": [
         "data/assets_extension.xml",
         "data/fields_default.xml",
diff --git a/models/res_partner.py b/models/res_partner.py
index f9fad93..7a9f426 100755
--- a/models/res_partner.py
+++ b/models/res_partner.py
@@ -5,22 +5,13 @@ class ResPartner(models.Model):
     _inherit = "res.partner"
 
     name_write = fields.Char(
-        string="Name in contracts",
-        help="This name uses in contracts",
-    )
-    name_genitive = fields.Char(
-        string="Name Genitive",
-    )
-    name_initials = fields.Char(
-        string="Name Initials",
-    )
-    function_genitive = fields.Char(
-        string="Function Genitive",
+        string="Name in contracts", help="This name uses in contracts",
     )
+    name_genitive = fields.Char(string="Name Genitive",)
+    name_initials = fields.Char(string="Name Initials",)
+    function_genitive = fields.Char(string="Function Genitive",)
     client_contract_ids = fields.One2many(
-        "res.partner.contract",
-        "partner_id",
-        string="Contracts",
+        "res.partner.contract", "partner_id", string="Contracts",
     )
     contract_count = fields.Integer(
         compute="_compute_contract_count", string="# of contracts"
@@ -28,25 +19,19 @@ class ResPartner(models.Model):
     full_address = fields.Char(
         compute="_compute_full_address"
     )  # Check for res.partner.contact_address in base/res
-    street_actual = fields.Many2one(
-        "res.partner",
-        string="Actual Address",
-    )
+    street_actual = fields.Many2one("res.partner", string="Actual Address",)
     representative_id = fields.Many2one(
         "res.partner", string="Representative", help="Person, who represents company"
     )
     representative_document = fields.Char(
-        string="Representative acts on the basis of",
-        help="Parent Case",
+        string="Representative acts on the basis of", help="Parent Case",
     )
     signature = fields.Binary(string="Client signature")
     whatsapp = fields.Char(
-        string="WhatsApp",
-        help="If a contact have a WhatsApp number",
+        string="WhatsApp", help="If a contact have a WhatsApp number",
     )
     telegram = fields.Char(
-        string="Telegram",
-        help="If a contact have a Telegram number or identifier",
+        string="Telegram", help="If a contact have a Telegram number or identifier",
     )
 
     @api.depends("street", "street2", "city", "state_id", "zip", "country_id")
diff --git a/models/res_partner_contract.py b/models/res_partner_contract.py
index 4155df9..139e8f6 100755
--- a/models/res_partner_contract.py
+++ b/models/res_partner_contract.py
@@ -47,14 +47,9 @@ class PartnerContract(models.Model, IDocument, Extension):
     )
     create_date_ts = fields.Char(default=_get_default_create_date_ts)
     res_model = fields.Char(default=lambda self: self._name)
-    name = fields.Char(
-        string="Contract number",
-        default=_get_default_name,
-    )
+    name = fields.Char(string="Contract number", default=_get_default_name,)
     create_date = fields.Datetime(string="Created on")
-    date_conclusion = fields.Date(
-        string="Date of system conclusion",
-    )
+    date_conclusion = fields.Date(string="Date of system conclusion",)
     date_conclusion_fix = fields.Date(
         string="Date of manual conclusion",
         help="Field for manual edit when contract is signed or closed",
@@ -70,11 +65,7 @@ class PartnerContract(models.Model, IDocument, Extension):
         default=1, help="Counter for generate Annex name"
     )
     state = fields.Selection(
-        [
-            ("draft", "New"),
-            ("sign", "Signed"),
-            ("close", "Closed"),
-        ],
+        [("draft", "New"), ("sign", "Signed"), ("close", "Closed"),],
         string="Status",
         readonly=True,
         copy=False,
diff --git a/models/res_partner_contract_annex.py b/models/res_partner_contract_annex.py
index a17c248..2f58012 100755
--- a/models/res_partner_contract_annex.py
+++ b/models/res_partner_contract_annex.py
@@ -10,29 +10,15 @@ class ContractOrderAnnex(models.Model, IDocument, Extension):
     _name = "res.partner.contract.annex"
     _description = "Contract Annex"
 
-    name = fields.Char(
-        string="Name",
-    )
-    display_name = fields.Char(
-        compute="_compute_display_name",
-    )
-    specification_name = fields.Char(
-        compute="_compute_specification_name",
-    )
+    name = fields.Char(string="Name",)
+    display_name = fields.Char(compute="_compute_display_name",)
+    specification_name = fields.Char(compute="_compute_specification_name",)
 
     contract_id = fields.Many2one(
-        "res.partner.contract",
-        string="Contract",
-        readonly=True,
-    )
-    company_id = fields.Many2one(
-        "res.partner",
-        related="contract_id.company_id",
-    )
-    partner_id = fields.Many2one(
-        "res.partner",
-        related="contract_id.partner_id",
+        "res.partner.contract", string="Contract", readonly=True,
     )
+    company_id = fields.Many2one("res.partner", related="contract_id.company_id",)
+    partner_id = fields.Many2one("res.partner", related="contract_id.partner_id",)
     order_id = fields.Many2one(
         "sale.order",
         string="Order",
@@ -40,58 +26,29 @@ class ContractOrderAnnex(models.Model, IDocument, Extension):
         required=True,
     )
     date_conclusion = fields.Date(
-        string="Conclusion Date",
-        default=fields.Date.today(),
-    )
-    counter = fields.Integer(
-        string="№",
-        help="Counter of Contract Annexes",
-    )
-    currency_id = fields.Many2one(
-        related="company_id.currency_id",
-        readonly=True,
+        string="Conclusion Date", default=fields.Date.today(),
     )
+    counter = fields.Integer(string="№", help="Counter of Contract Annexes",)
+    currency_id = fields.Many2one(related="company_id.currency_id", readonly=True,)
 
-    design_period = fields.Integer(
-        string="Design Period",
-    )
-    design_cost = fields.Monetary(
-        string="Design Cost",
-    )
+    design_period = fields.Integer(string="Design Period",)
+    design_cost = fields.Monetary(string="Design Cost",)
 
-    design_doc_period = fields.Integer(
-        string="Documentation Design Period (days)",
-    )
-    design_doc_cost = fields.Monetary(
-        string="Documentation Design Cost",
-    )
+    design_doc_period = fields.Integer(string="Documentation Design Period (days)",)
+    design_doc_cost = fields.Monetary(string="Documentation Design Cost",)
 
-    delivery_address = fields.Char(
-        string="Delivery Address",
-    )
+    delivery_address = fields.Char(string="Delivery Address",)
     delivery_period = fields.Integer(string="Delivery Period (days)")
 
-    installation_address = fields.Char(
-        string="Installation Address",
-    )
-    installation_period = fields.Integer(
-        string="Installation Period (days)",
-    )
-    installation_cost = fields.Integer(
-        string="Installation Cost",
-    )
+    installation_address = fields.Char(string="Installation Address",)
+    installation_period = fields.Integer(string="Installation Period (days)",)
+    installation_cost = fields.Integer(string="Installation Cost",)
 
-    total_cost = fields.Monetary(
-        string="Total Cost",
-    )
+    total_cost = fields.Monetary(string="Total Cost",)
 
     payment_part_one = fields.Float(string="Payment 1 Part (%)", default=100)
-    payment_part_two = fields.Float(
-        string="Payment 2 Part (%)",
-    )
-    payment_part_three = fields.Float(
-        string="Payment 3 Part (%)",
-    )
+    payment_part_two = fields.Float(string="Payment 2 Part (%)",)
+    payment_part_three = fields.Float(string="Payment 3 Part (%)",)
 
     @api.multi
     @api.depends("name")
@@ -128,8 +85,7 @@ class ContractOrderAnnex(models.Model, IDocument, Extension):
         order_number = self.order_id.name or "SO###"
 
         self.name = "{contract}-{order}".format(
-            contract=contract_number,
-            order=order_number,
+            contract=contract_number, order=order_number,
         )
 
     @api.model
diff --git a/models/res_partner_contract_field.py b/models/res_partner_contract_field.py
index 127f0df..3737af8 100755
--- a/models/res_partner_contract_field.py
+++ b/models/res_partner_contract_field.py
@@ -6,25 +6,10 @@ class ContractField(models.Model):
     _description = "Contract Field"
     _order = "sequence"
 
-    name = fields.Char(
-        string="Name",
-        required=True,
-        translate=True,
-    )
+    name = fields.Char(string="Name", required=True, translate=True,)
     technical_name = fields.Char(
-        string="Technical Name",
-        help="Name uses in template",
-        required=True,
-    )
-    description = fields.Char(
-        string="Description",
-        translate=True,
-        default="",
-    )
-    sequence = fields.Integer(
-        string="Sequence",
-    )
-    visible = fields.Boolean(
-        string="Visible",
-        default=True,
+        string="Technical Name", help="Name uses in template", required=True,
     )
+    description = fields.Char(string="Description", translate=True, default="",)
+    sequence = fields.Integer(string="Sequence",)
+    visible = fields.Boolean(string="Visible", default=True,)
diff --git a/models/res_partner_contract_field_transient.py b/models/res_partner_contract_field_transient.py
index efbff8e..07f043c 100755
--- a/models/res_partner_contract_field_transient.py
+++ b/models/res_partner_contract_field_transient.py
@@ -6,33 +6,17 @@ class ContractFieldTransient(models.TransientModel):
     _description = "Contract Field Transient"
 
     _contract_wizard_id = fields.Many2one(
-        "res.partner.contract.wizard",
-        string="Contract",
-        readonly=True,
-    )
-    contract_field_id = fields.Many2one(
-        "res.partner.contract.field",
-        string="Field",
-    )
-    name = fields.Char(
-        related="contract_field_id.name",
-        string="Name",
-        readonly=True,
+        "res.partner.contract.wizard", string="Contract", readonly=True,
     )
+    contract_field_id = fields.Many2one("res.partner.contract.field", string="Field",)
+    name = fields.Char(related="contract_field_id.name", string="Name", readonly=True,)
     technical_name = fields.Char(
         related="contract_field_id.technical_name",
         string="Technical Name",
         readonly=True,
     )
     description = fields.Char(
-        related="contract_field_id.description",
-        string="Description",
-        readonly=True,
-    )
-    visible = fields.Boolean(
-        related="contract_field_id.visible",
-    )
-    value = fields.Char(
-        string="Value",
-        default="",
+        related="contract_field_id.description", string="Description", readonly=True,
     )
+    visible = fields.Boolean(related="contract_field_id.visible",)
+    value = fields.Char(string="Value", default="",)
diff --git a/models/res_partner_document_template.py b/models/res_partner_document_template.py
index 65f9961..7de7d06 100755
--- a/models/res_partner_document_template.py
+++ b/models/res_partner_document_template.py
@@ -39,9 +39,6 @@ class DocumentTemplate(models.Model):
         ]
     )
     template_type = fields.Selection(
-        selection=[
-            ("contract", "Contract"),
-            ("annex", "Annex"),
-        ]
+        selection=[("contract", "Contract"), ("annex", "Annex"),]
     )
     sequence = fields.Integer()
diff --git a/models/sale_order.py b/models/sale_order.py
index 24c6eed..ecf4788 100755
--- a/models/sale_order.py
+++ b/models/sale_order.py
@@ -6,14 +6,9 @@ from ..utils import MODULE_NAME
 class SaleOrder(models.Model):
     _inherit = "sale.order"
 
-    delivery_time = fields.Integer(
-        string="Delivery Time",
-        default=45,
-    )
+    delivery_time = fields.Integer(string="Delivery Time", default=45,)
     contract_annex_id = fields.Many2one(
-        "res.partner.contract.annex",
-        string="Contract Annex",
-        readonly=True,
+        "res.partner.contract.annex", string="Contract Annex", readonly=True,
     )
     # Extend default field
     payment_term_id = fields.Many2one(
diff --git a/wizard/res_partner_contract_wizard.py b/wizard/res_partner_contract_wizard.py
index ca12ab1..0394cc1 100755
--- a/wizard/res_partner_contract_wizard.py
+++ b/wizard/res_partner_contract_wizard.py
@@ -46,14 +46,10 @@ class ContractWizard(models.TransientModel, Extension):
         default=_default_target,
     )
     company_id = fields.Many2one(
-        "res.partner",
-        string="Company",
-        compute="_compute_company_id",
+        "res.partner", string="Company", compute="_compute_company_id",
     )
     partner_id = fields.Many2one(
-        "res.partner",
-        string="Partner",
-        compute="_compute_partner_id",
+        "res.partner", string="Partner", compute="_compute_partner_id",
     )
     document_name = fields.Char(
         string="Document Name", compute="_compute_document_name"
@@ -71,8 +67,7 @@ class ContractWizard(models.TransientModel, Extension):
         string="Contract Fields",
     )
     transient_field_ids_hidden = fields.One2many(
-        "res.partner.contract.field.transient",
-        "_contract_wizard_id",
+        "res.partner.contract.field.transient", "_contract_wizard_id",
     )
 
     @api.depends("target")
@@ -98,11 +93,7 @@ class ContractWizard(models.TransientModel, Extension):
 
     @api.onchange("document_template")
     def _domain_document_template(self):
-        return {
-            "domain": {
-                "document_template": self._get_template_domain(),
-            }
-        }
+        return {"domain": {"document_template": self._get_template_domain(),}}
 
     @api.onchange("document_template")
     def _onchange_document_template(self):
@@ -112,9 +103,7 @@ class ContractWizard(models.TransientModel, Extension):
 
         def get_contract_field(technical_name):
             return self.env["res.partner.contract.field"].search(
-                [
-                    ("technical_name", "=", technical_name),
-                ]
+                [("technical_name", "=", technical_name),]
             )
 
         model_to_action = {
@@ -134,10 +123,7 @@ class ContractWizard(models.TransientModel, Extension):
                 4,
                 self.env["res.partner.contract.field.transient"]
                 .create(
-                    {
-                        "contract_field_id": get_contract_field(field).id,
-                        "value": value,
-                    }
+                    {"contract_field_id": get_contract_field(field).id, "value": value,}
                 )
                 .id,
                 0,