... /brass sheet, preoxidized finish, with 12mm tempered Glass. Double Opening Metal Door (New)(1) Material: 1.2mm copper/brass sheet ... finish with double clear coating(4) Techniques: hand-hammer, embossing. etching(5) Accessories(included): door frame, door hinges, door handrail, door lock ... and special requirement of structure and quality for Security Door(like bank, cashbox),using net-like and parallel ...