... 3) Fast delivery 4) NCT, NC bending, punching 5) Powder coating 1. Material: aluminum, stainless steel, SPCC, SPHC, SECC, SPHC, SZACC ... bending, punching, etc.3. Surface treatment: Degreasing, Pickling, Phosphoric, powder coating etc.4. Color: Grey, Black, White or as your request ... reply you ASAP. if you are looking for a shining frame to suit your pictures, why not choose a pure aluminum ...