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The coating crystalline is fine and bright, with excellent weldability and discoloration resistance.
It is used for electroplating tin on circuit boards, electronic devices and hardware parts.
| Stannous sulfate | 20～40 g/L |
| Sulfuric acid | 80～98 ml/L |
| LD-7702A | 20～40 ml/L |
| LD-7702B | 1～3 ml/L |
