Some polyurethane resin coating contains more free TDI, brushed in besmear in the process of volatile, will lead to latex paint of yellow.

有的聚氨酯树脂涂料中含较多的游离tdi，在涂刷挥发过程中，将会导致乳胶涂料泛黄。

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Therefore, electroplating of lead-free solder coating is one of investigation hotspots in electronic electroplating field.

因此，电沉积无铅可焊性镀层是电子电镀领域的研究热点之一。

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The coating has excellent solder properties and can be used on the surfaces of printed circuit board and patch-like electronic apparatus in order to carry out lead-free electronic packing.

该镀层的可焊性优良，可作为印刷电路板和元器件的表面镀层，从而实现电子封装的无铅化。

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