1)aluminium extruded profile . 2)95% national aluminium ingot. 3)aluminium profile length 6m 4)superior quality Material specifications 1)Quality approved by national construction department, ISO9001:2000 and CE certificate can be provided. 2) Various styles and dimensions3) Excellent thermal insulation,4)Sound insulation5) Anti-aging6) High impact resistance7)Good waterproofFrame Material: ...