Qingdao Jingrui Machinery Manufacturing Co., Ltd. (hereinafter referred to as "ESG") is a high-tech enterprise integrating the research and development, production and sales of valves, a specialized and innovative small and medium-sized enterprise, and a "Gazelle" enterprise in Shandong Province. The company closely follows customer demands and is committed to becoming a leader in fluid process control system solutions.

Since its establishment in 2001, ESG has obtained over a hundred patents, including 10 invention patents. The company is dedicated to building an HCPS intelligent manufacturing factory, with its main products covering industrial valves, sanitary valves and related control components. Its mainstream valve series products such as angle seat valves, shuttle valves, diaphragm valves, butterfly valves, ball valves, steam traps and membrane plug valves have been widely praised by customers. The company's valve products are exported to 82 countries and serve 19 key industries including nuclear industry, new energy, medicine, food and beverage, rubber and tires, as well as 9 Fortune 500 companies.