1. ISO9001 and UKAS ISO14001 certified. 2. New aluminum ingot used. 3. GB5237 standard. 4. Easy installment. curtain wall, glass curtain wall, curtain walling, aluminum curtain wall1. Surface finish: anodizing, electrophoresis, powder coating, wooden coating, mill finish.2. Aluminum alloy 6061, 6063, 6063A, etc.3. Temper: T4, T5, T6.4. Production capacity: 100,000 tons annually.5. OEM and ODM ...