Qingdao Elite Machinery Manufacture Co.,Ltd. (hereinafter referred to as "ESG"), established in 2001, is a high-tech enterprise, a specialized and innovative "little giant" enterprise, and a Shandong Province gazelle enterprise integrating R&D, production, and sales of stainless steel pneumatic valves. The company closely focuses on customer needs and is committed to becoming a leader in fluid process control system solutions.

ESG's main products cover industrial-grade valves, sanitary valves, and related measurement and control instruments. Its various mainstream valve series, including angle seat valves, shuttle valves, diaphragm valves, butterfly valves, ball valves, steam traps, and diaphragm plug valves, are widely praised by customers. In recent years, while consolidating its advantages in textile printing and dyeing, foam plastics, air separation, and casting, the company has actively expanded into the pharmaceutical, new energy, rubber and plastics, and food and beverage industries, strengthening professional services and providing customized system solutions to customers, thus opening up new prospects for development. Currently, the total number of industries served has expanded to 19.

The company continuously advances production construction, upgrades its foundry, and builds the HCPS intelligent manufacturing base. It boasts advanced precision casting, machining, and assembly production lines, independently develops casting molds, and is equipped with automated shell-making production lines, various robotic arms, machining centers, CNC lathes, and automated equipment for welding, ultrasonic cleaning, and assembly. To strictly control quality, the company has introduced imported German spectrometers, coordinate measuring machines, surface roughness testers, hardness testers, and various advanced equipment for testing fatigue, pressure, and sealing performance. It has established seven laboratories covering fatigue, performance, operating conditions, flow rate, materials, metrology, and mechanics, adhering to full-process testing and quality control for valves. The company has successively passed ISO quality, environmental, energy, and safety certifications, as well as international authoritative certifications such as FDA, TS, CE, UKCA, CU-TR, and ATEX.

ESG continuously increases its R&D investment, improves product performance, and promotes domestic substitution for imports. Through high-level synergy between R&D and business, it provides innovative products to end customers. As of the first half of 2025, it had obtained over 139 patents, including over 17 invention patents. The company was recognized as a "One Enterprise, One Technology" R&D Center in Shandong Province. Its angle seat valve was listed in the 2022 Shandong Province's list of first-of-its-kind technical equipment and key core components. The company has successively developed and launched a series of high-quality products, including nuclear industry gate valves, pharmaceutical-grade diaphragm valves, and new energy lithium battery membrane plug valves, solving key technological bottlenecks in major industries, promoting domestic substitution for imports, reducing costs and increasing efficiency for customers, and improving service experience. Simultaneously, the company has established industry-university-research cooperation relationships with several universities, including Shanghai University of Science and Technology and Qingdao University of Science and Technology.

After more than 20 years of development, ESG has grown into a well-known brand with international influence. The company's valve products are sold to 82 countries, serving 9 Fortune 500 companies, and its brand trademark has been successfully registered in 34 countries. The company takes practical actions to lead the industry towards intelligent, low-carbon, and personalized new trends, actively practicing its declaration of "Making Good Valves for the World".