Specializing in the production of sulfur-free tin-cobalt gun, Foshan sulfur-free tin-cobalt color brighteners gun manufacturers, Zhuhai tin ..

Specializing in the production of sulfur-free tin-cobalt gun, Foshan sulfur-free tin-cobalt color brighteners gun manufacturers, Zhuhai tin, cobalt gun color plating process 13686661868 Zhuhai sulfur-free tin-cobalt gun color brighteners bright nickel plating process → → Recycling → washing → washing → tin cobalt gun color plating → washing → → recovery after treatment * → recycling → washing → washing → drying * Following the process is to increase the corrosion resistance of the coating, the generally passive use of chromic anhydride (chromic anhydride: 50 g / l acetic acid to adjust the pH = 3-5, time: 30 seconds, temperature: room temperature). Zhuhai sulfur-free tin-cobalt gun color brightener Details: http: //www.dghaolun.com/ Hollen main products: plating additives, nickel plating, acid copper plating, electroplating brighteners, alkaline copper brightener, on behalf of the chromium additives, black chrome additives, electrolysis protection powder, degreasing powder, in addition to oil, electroplating sealers, aluminum dip zinc. Hollen surface treatment material Official website: http: //www.diandu168.com Usually Zhuhai sulfur-free tin-cobalt gun color brighteners customers, please call Miss Zhang Huiqun: 13686661868, mode of transport: delivery, courier or Logistics. If necessary Agent plating additive, electroplating brighteners customers, please visit: http: //www.gdhaolun.net