本公司碱性镀锌三价铬黑钝色钝化剂NT-chrome 185A/B有如下特点：

1、经本产品处理后的工件，水煮后不含六价铬等其他危害物质，符合ROHS和IEC国际标准；

2、本产品适用于碱性镀锌，挂镀滚镀皆宜；

3、钝化膜外观均匀，颜色乌黑光亮；

4、本产品操作简便，无需加温，PH使用范围广，药液使用量经济，槽液长期使用非常稳定；

5、使用A/B剂钝化，再通过三价铬绿色体系封闭剂Finish 300封闭后的工件，耐腐蚀能强，中性盐雾实验挂镀96小时以上，滚镀可达72小时以上；

6、镀液不含难分解络合物，废水处理方便；

The company of alkaline zinc trivalent chromium black color dull passivator NT - chrome 185 a/B has the following features:
1, after the product processing of the workpiece, boiled after excluding hexavalent chromium and other harmful substances, comply with ROHS and IEC international standards;
2, the product is suitable for use in alkaline zinc plated, is suitable for hanging plating barrel plating;
3, passivation film appearance and the color of black light;
4, this product is easy operation, without heating, PH range is wide, use economy of liquids, liquid tank use for a long time very stable;
5, the use of A/B agent passivation, and then through the trivalent chromium green system blocking agent Finish after 300 closed artifacts, can strong corrosion resistance, neutral salt spray test plating 96 hours, barrel plating can reach more than 72 hours;
6, complex plating solution contains no difficult decomposition, waste water treatment is convenient;