... manufacturer called "shandong huajian aluminium co,.ltd" in the line of aluminium profile, aluminium extrusion and aluminium windows & doors ... aluminum side hung windows and doors,aluminium shutter,aluminum thermal break window and door,aluminum curtain wall.3.Surface ... Treatment: mill finish, anodized, powder coated, Electrophoresis, Thermal-break,wood-grained, etc.,4. Alloy: 6063A,6063,6061, ...