Hardware product 1.Material:brass. 2.Process tooling:progressive die. 3.Finish:no surface treatment. 4.OEM,ISO9001:2000,ROHS About productMaterial:The use of material involve many types,such as Stainless steel,Aluminum,Brass,Bronze.Iron(SGCC,SECC,SPCC),etc.If you have special request in material.Please let me know.Every material is ok to us.Finish:Zinc/Nickel/Chrome plating,Powder coating,Anodize ...