Young wang cold-formed mechanical shutters Machinery Factory has 20 years of experience in the machinery industry , specializing in the production of various shutters equipment, including fire doors complete unit turn pages of various steel-lined steel door unit tile machine equipment CZ steel equipment R & D and manufacturing . Our advanced technology , strict management , professional team for you to create a satisfactory product . Our study focused on customer needs , insist on providing safe, reliable and competitive products and services , continued customer satisfaction.