The electroplating factory in Zhenhai, Ningbo has black nickel electroplating.

Ningbo Yuan Bo Electroplating Co., Ltd. According to Aiqi's inquiry, Ningbo Yuan Bo Electroplating Co., Ltd. was established in August 2004. It is a company specializing in electronic and hardware electroplating, adhering to the production experience and management mode of Taiwan-funded enterprises and Guangdong Humen Li Xing Electroplating Factory. The company's main business is electronic connectors, computer terminals, electrical switches, earphone connectors, computer screws and other electronic and hardware barrel nickel plating, tin plating and continuous electroplating of all gold, all tin, semi-Suk Kim and matte tin.