Surface treatment of various material products produced by Chengshuo hardware factory.The first one is our composite production and processing of aluminum product,after precision manufacturing ,anodized the product in black, including the interior of the pores.The following red aluminum board, according to the Pantone color number, we did oxidation and fine sandblasting .The third aluminum gear the customer requires different colors on the side and front, added custom logo and product model.The fourth steel product we did electrophoretic blackening, for other products, customize the process according to customer needs in different industries.