介绍了光亮硫酸盐镀锡液中各成分作用及其工艺流程，对锡镀层变色的原因进行了分析。
Function of each component in solution and process flow of bright sulfate Sn plating were introduced. Tarnish reasons of Sn deposit were analyzed.
硫酸盐光亮镀锡工艺具有电流效率高、沉积速度快、成本低及废水易处理等优点，在电镀生产中已广泛应用。
Sulfate tin plating process has been widely used in electroplating industry for its strengths such as high current efficiency, fast plating rate, low cost and easy effluent disposal.
对一种市售酸性硫酸盐光亮镀锡添加剂性能、生产应用、原材料成本、工艺技术以及槽液的维护等多方面都作了介绍；
The article analyses the measures to improve the presentation quality from the following construction crafts: the manufacture and mounting of moulding board; the material quality;
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