1)Material:zinc alloy 2)American/Japanese-style lock body 3)Surface treatment:GP 4)Certification:ISO9001-2008 5)High quality We are factory located in shanghai,chinaWe have different door lock item for choosingWe also make new locks as per drawing and samples1). Material: iron alloy/ stainless steel/ brass/,according to your order.2). Finish: zinc plated,chrome plated,bright brass plated etc., ...