... 1.Stainless steel 304, 316 2. mirror polish, 3.Stainless Steel Handle,door handle,stainless steel square door handles 1.Material : Stainless steel 304, 3162. Surface: mirror polish, high polished3.Stainless Steel ... , milling, drilling, thread cutting.5. Surface treatment: glass rays electrolytic polishing, coating, varnishing, bromzing. Passivating, grinding, polishing6. Analysis wet chemically ...