Cu-Sn alloy coating with different Sn content can be replacement plating out on iron and steel surface in a solution comprising of copper sulfate, stanous sulfate, complexant and stabilization agent.

铁件在由、亚锡、络合剂、稳定剂等组成的溶液中,可以置换镀覆不同锡质量分数的- 锡合金镀层,其工艺可替代氰化物预镀,消除氰化物污染,实现电镀清洁生产措施之一。

The product has red dumet wire, pale (golden yellow) dumet wire, white dumet wire, no B dumen wire and luminous (is moisture-proof) dumet wire etc.

先进的表面镀（或套）技术使美表面状态呈均匀的砖红色或黄色等。产品有红美、淡（金黄）色美、美、无硼美和光亮（防潮型）美等。

Used AgNO3 Standard solution to measure the content of mercapto heterogeneous ring compound and thioureido derivative in acid coppering gloss agent continuously by potentiometric titration.

以硝银标准溶液，采用电位滴定法，连续测定性镀光充剂中的巯基杂环化合物和脲衍生物的含量。

With regards to the surface treatment, our crafts include nigrescence, phosphorization, zinc plating, dacromet, nickel plating and copper plating.

表面处理有发黑、磷化、机械镀锌、达克罗、镀镍、镀等工艺。