... 9001,ISO14001, CE certified metal stamping part1. Material:carbon steel,stainless steel, aluminium, brass,2. Specifications:according to drawings and samples ... Surface Treatment: Zinc plated,nickel plated,chrome plated,hot-dip,galvanized or others5. Certification:ISO 9001,ISO140014. Packing:bubble bag ... trusted behind-the-scenes partner in your business. Metal hinge, door hinge,carbon steel hinge