... , stainless steel, SPCC, SPHC, SECC, SPHC, SZACC, SGCC etc.2. Processing: NCT, NC bending, punching, etc.3. Surface treatment: Degreasing, Pickling ... , Phosphoric, powder coating etc.4. Color: Grey, Black, White or as your request.5. Quality control ... form drawings(in Chinese/English), just tell us your requirements color varnish paint