Surface finish

Tongshi is a full-service electroplating and metal finishing provider. Our process capabilities include Heat treament, Chrome, Nickel, Cadmium, Copper, Zinc, Tin-zinc, Electroless Nickel plating, Anodizing, Chem-Film, Passivation, Phosphate, Microarc anodiing,and Electro-polishing for products made of carbon steel, stainless steel, aluminum alloy, and superalloys. Besides, we offer non-electrolytic coating services. We serve customers in the automotive, aerospace, high-speed rail, energy, superconductor, and medical industries..


MIL-A-8625, Type III
MIL-A-8625, Type II
ASTM B580, Type A
MIL-DTL-5541,Type I, class 3