Dongguan Jingjing Surface Technology Co., Ltd. is a professional company specializing in hard chrome plating process development, production, sales and service. The company's predecessor worked with Atotech in 1988 to create Nanjing Nanan Company, and then cooperated with a German company to conduct some in-depth discussions and research on the German ANKOR process and NF-T process. On the basis of summarizing the previous work experience, the company researched and developed the high-efficiency microcrack hard chrome plating intermediate DX-30 pure product and ST~930 ultra-high speed hard chrome plating process.