1Alloy: 6063 or 6061. 2Temperaa T5 or T6 3Surface treatment:mill finish, anodizing slver/champagne/bronze/gold We are Shandong Jinxiang Aluminium company which specializes in producing aluminium profiles for all kinds of windows (sliding, casement ,folding ,thermal break ),doors (sliding,folding),industrial and decoration profiles.Our products are special because they are made of good quality and ...