Phillips head combination screws 1,Products DetailesMaterial1.Stainless Steel: SS201, ... and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize ... ,Stress Relieving.StandardISO,GB,DIN,JIS,ANSI,BSWManufacture ProcessHeading/washer assembly/Threading/Secondary ... problem after sales. 2,Factory overview 3, Warehouse and Workshop show 4,Manufacture Process 5,Quality ...