In 2007, SHENZHEN ZIJINGWANG TECHNOLOGY CO., LTD was established to study the theory of self-locking force. In 2010, it successfully obtained US invention patent. In 2019, TONGSHUN RIVET acquired and held the shares of ZIJINGWANG and established ZHEJIANG ZIJINWANG TECHNOLOGY CO., LTD. In 2020, TONGSHUN RIVET successfully obtained the invention patent for ZIJINWANG anti-loosening fasteners. The company has been committed to experimental analysis, research, and development of fasteners that never loosens based on the self-locking principle, and has obtained more than 20 independent intellectual property rights. With an area of 50,000 square meters, it has over 30 employees right now. ZHEJIANG ZIJINWANG is currently the only high-end enterprise in China that possesses original intellectual property rights for the invention patent of anti-loosening nuts. The product provides solutions for self-locking force and has gained wide recognition and use in various industries. ZIJINWANG anti-loosening fasteners are applied in industries and fields such as railways, large shield machines, mining, electric power, automotive, engineering, port, petrochemical refining, foundry and forging machinery. By constant development and innovation, we contribute to improving the quality of the Chinese machinery industry from small place and advancing towards the global market. ZIJINWANG has always been committed to solving all fastener loosening problems, eliminating safety incidents caused by loosen fasteners. To create greater value for customers, to create opportunities for staff development, to create benefits for society, we will build up our strengths and forge ahead!