... ,T4,T5,T6. 2.Surface treatment:anodized,powder coating,pvdf,brush,polish,wooden transfer 1.Aluminium alloy/temper:6063,6061,T4,T5 ... ,T6.2.Surface treatment:anodized,powder coating,pvdf,brush,polish ... extrusion machine is the largest machine in the souther China aluminium Thermal break windows and doors