aluminum window 1.Finish: Anodizing,powder coating,wood colour,brushed, polishing 2.AAMA,DIN,ISO9001 aluminum windowA. Alloy: 6063/6061 ... polishing, brushed, mill finish availableC. Procedure: Preciously Cutting, milling, drilling, punching, CNC machiningD.Advantage:Precious machining ... and cutting : length tolerance can be 0.5mm, hole ...