Materials Standard
1、Profile:《GB5237-2008》
2、Hardwares：《JGJ113-2009》
3、Glass:《JGJ113-2009》
4、System Standard： 《GB8478-2008》

Product Feature：
5、Aluk system design with better performance 
6、Profile: Main structure thickness:2.0mm
7、Glass: Single and Double glasses is available
8、Hardwares:Hook lock and Two point lock is available
9、Frame designed in 90 degree and Sash 45 degree Easy 
10、Customized profile color is available