Shanxi Jinjin Chemical Co., Ltd. is a domestic enterprise specializing in the production of blackening agents. Founded in 1988, it is the only R&D and production enterprise of blackening agents for steel in China. It is a private scientific and technological enterprise in Shanxi Province, a private scientific and technological innovation enterprise in Shanxi Province, and an environmental protection company in Shanxi Province. Vice president unit of industrial association and member unit of China Heat Treatment Association. It mainly produces Jinhu brand WY, SH, WF series steel blackening agent, QW-FI steel heating protection agent, steel heating antioxidant, high-efficiency preservative and other metal surface treatment materials. The company has high-quality technology and enterprise management talents, has accumulated more than 20 years of rich experience in research and development, continuous innovation, high starting point, high quality for domestic and foreign markets. Passed ISO9002 international quality management system certification in 2000. Since the establishment of the company, it has been devoted to the R&D and production of Jinhu brand steel blackening agent. The project passed the scientific and technological achievement appraisal of Shanxi Province in August 1991 [(91) Jinke Jianzi No. 174], with low cost and energy saving. Water, eliminate pollution, fill domestic gaps; at the same time passed the Shanxi new product production appraisal [Jinxiang Kejianzi (1991) No. 11], the new product production appraisal certificate number is Jinjian 91073; won the Seven Five in the same year Silver Award of the National Spark Program Expo, won the Gold Award of the China New Products and New Technology Expo in 1992; in 1996, it was listed by the State Environmental Protection Administration as the project of the 1996 National Environmental Protection Best Practical Technology Promotion Plan, and was classified as a clean project. Production process category (Project No. 96-AW-006); WY steel blackening agent passed the scientific and technological achievements appraisal of Shanxi Province in September 2000, and won the second prize of Shanxi Province Scientific and Technological Progress in 2003, confirmed as 2008 National Key Environmental Protection Practical Technology was awarded the honor of clean process and environmental protection products by the State Environmental Protection Administration.