Include customized fields from product.template in purchase order lines

Environment platform context: ODOO CE v11 In Odoo, we want to included two customized fields in table [login to view URL] in purcharse order lines. Theses fields are populated from product sheet and are included in purcharse order line as a reference value, It will be READ ONLY value, and help us when creating purchase oder lines. We want to included two customized fields in table [login to view URL] in purcharse order lines. Theses fields are populated from product sheet and are included in purcharse order line as a reference value, It will be READ ONLY value, and help us when creating purchase oder lines.