... in producing many different OEM products likeWelding and Assembling parts Welding and Assembling parts 1, We've a specialized engineering ... are imported from Japan.3. Various raw material including carbon steel,stainless steel,aluminium and plastic: ABS, AS, PPS, PP, POM, PPO ... , PC, PA, PMMA,PS,TPE,TPU,TPR and etc.4.surface treatment: heat treatment, carbonitriding , electroplating, paining ...