... ISO9001:2008, ROHS certification 2.aluminum screw 3.plating nickel,zinc,silver,gold etc. Aluminum Screw·Surface: polishing,nickel /zinc/chrome ... month·Quality assurance in accordance with ISO9001:2008· Aluminum Screw are produced according to customers' drawing or sample.Has ... , Xitangqiao Town, haiyan,Zhejiang, China (Mainland)Area :24,000 square meters,Staff:100-200Major product: 1.brass pin 2.brass ...