... thermal-break, sand blasting, polishing, and moreAluminium alloy6063, 6061, ApplicationIndustrial and Building MaterialsStatusTempered,Insulating,Coated,MulticolorTemperT4,T5 ... material of door and window:AA10 class;Oxidation material of curtain-wall:AA15 class;Aluminium surface ... clean,without crack,rust and bubbleCustomized colors are availablePacking: ...