Ningbo Yiji Valve Manufacturing Co., Ltd., founded in 1958, is a national high-tech enterprise with a history of more than 60 years and the qualification for manufacturing large and medium-sized valves, and a national specialized, special and new "little giant" enterprise. With a registered capital of 10.08 million yuan, the company is a member of China urban water supply and Drainage Association and China Electric Power Enterprise Federation, a qualified supplier of Sinopec and CNOOC, a director of valve branch of China General Machinery Industry Association, a vice chairman of valve Committee of China Building Metal Structure Association, and a member of Ningbo Quality Management Association. The factory covers an area of 33300 square meters. It has a provincial research and development center for high-tech enterprises in Zhejiang Province, an innovation and entrepreneurship base for craftsmen in large countries, and an employment practice base for college students. The company has 30 high-level and middle-level professional and technical personnel, with finishing equipment, special equipment, physical and chemical equipment and a full range of valve detection equipment.

The "EG" trademark of the company is a well-known trademark in China and a national promotion brand. The company has passed ISO9001 international quality system certification, ISO14001 environmental management system certification, occupational health and safety management system certification, China Environmental Mark (Type II) product certification, China Aquatic Products Certification, EU CE product certification, UK WRAS certification, API product certification of the American Petroleum Association, and AA level certification of enterprises with good national standardization behavior China CCCF fire product certification, AAA certification of measurement management system, intellectual property management system certification, IP68 waterproof and dust-proof certification of