Mill finish,Anodizing,Powder coating... 6063,6061 with T5,T52,T6 temper 17 years production experience 3 factories 1. Surface treatment: mill finish, anodized, powder coated, electrophoresis, wood finish, heat-insulation, mechanical polish, sand blasting2. Hardness: Min HW8.53. Production capacity: 5000MT/Month4. International Certification: ISO9001, ISO140015. Qualtity Standard: GB/T 5237-2008 ...