... 4. Various colors: Silver,bronze,black,gold,blue,grey,champagne,red,etc. 5. Machining: Cutting,punching,drilling,milling,bending,welding, ... CNC etc.6. Various in styles and sizes: A). Aluminum alloy bars: ranging from 1000 series to 7000 ... profiles ( Aluminum doors&windows, JB8A8, JB828 and JB828 Sliding Windows, JB50A Door Window, Curtain Wall Frame etc.)7. Certification: ISO9001,SGS ...