... Surface treatment: mill finish,anodizing, powdering,etc Materials from Dupond Aluminium profiles for doors slidingone of key enterprises ... with ISO9001 2000 Standard, and so on. Machine are mostly imported from Germany, Italy.Products include: Window and door ... coatings like: mill finish, anodizing, powdering, etc, materials are from Dupond,etc.OEM service and buyer label service offered. Aluminium ...