Shanxi Yongjin Group Co., Ltd. was established in 1988, the company is registered in Hejin City, Shanxi Province, with a registered capital of 10 million yuan and a total investment of nearly 100 million yuan. It is a high-tech enterprise in Shanxi Province and a private technological innovation enterprise in Shanxi Province. It mainly produces pharmaceuticals raw materials, pharmaceutical intermediates and steel blackening agent metal surface treatment materials and other products, of which the steel blackening agent is registered ashttp://www.sinojhkj.com/