... 1. Surface treatment: mill finish, anodized, powder coated, electrophoresis, wood finish, heat-insulation, mechanical polish Etc.2. Hardness: Min ... in manufacturing and distributing of aluminium profiles, doors, windows,curtain walls and etc. Dongwei Group covers an area of 200 ... lines, 5 powder coating lines, 10 anodizing lines,2 wood finished llines,Our production capacity exceeds 40,000MT. Dongwei ...