666 lead free white copper tin Stannum plating
1.high hardness
2.good corrosion proof ability
3.Soft plating
4. ROHS

626 white Cu-Sn alloy plating  chemicals additives technology

626 white Cu-Sn alloy plating technology can plate a layer of nickel silver and bright coating. As the soft and good coverage of the coating, higher hardness and better corrosion performance made it one of the best nickel substitute plating technology. It can plate a layer of 10um coating and can directly plate on the copper and copper alloy.

Make-up Method (for one liter)

   Pure water                                  700ml

   Sodium cyanide                               45g

   Copper cyanide                               18g

   626 white Cu-Sn replenisher                     60ml

   Sodium stannate                               30g

   Potassium carbonate                            25g

When they are completely dissolved, and then add pure water to the working water position and deal with the activated carbon to the clear state. After adding 40ml/l the 626 white Cu-Sn make-up, you can start to plate in a test.