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.

铁件在由硫酸铜、硫酸亚锡、络合剂、稳定剂等组成的,可以置换镀覆不同锡质量分数的铜- 锡合金镀层,其工艺可替代氰化物预镀铜,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.

先进的表面镀铜（套铜）技术使杜美丝表面状态呈均匀的砖红等。产品有红杜美丝、淡（金）杜美丝、白杜美丝、无硼杜美丝和光亮（防潮型）杜美丝等。

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.

以硝酸银标准，采用电位滴定法，连续测定酸性镀铜光充剂的巯基杂环化合物和硫脲衍生物的含量。

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、镀铜等工艺。