aluminum casting Bronze Passivation surface OEM,ODM,Custom Tolerance 0.01mm
Sinoway Industry company was established in 2011 and is located in Qingdao, Shandong. It has more than 10 years of experience in metal parts processing services. We specialize in product R&D design, parts processing, assembly packaging, OEM supply chain and other products. The products we have produced include sand casting parts,lost wax investment casting parts,drop



