... ,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc.Heat TreatmentTempering ... for every customer and help solve problem after sales. 2,Factory show 3,Raw Material warehouse 4,Manufacture Process 5, Strong ... and Evaluation7,Why Choose us? Cap head slotted screws with yellow zinc plated