... specialised in producing many different OEM products likeWelding and Assembling parts Welding and Assembling parts 1, We've a specialized engineering ... .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, ...