A new immersion plating process was developed in which copper sulfate and stannous sulfate were used as main salt, with addition of complex, brightener and stabilizer to tin salt.

• 采用硫酸铜、硫酸亚锡为主盐,加入络合剂、光亮剂、锡盐稳定剂,研究成功了一种新的浸镀铜锡合金工艺。