YONGLIAN.YONGLIAN Company, established in 1982, is a national key high-tech enterprise integrating R&D, production, sales, and service. By adopting advanced domestic and international manufacturing processes and implementing a rigorous quality management system, the company delivers products featuring innovative designs and superior construction. It has obtained ISO9001:2000 quality system certification and holds a Special Equipment Manufacturing License. The company consistently pursues an integrated approach of “production, education, and research,” emphasizing independent innovation and R&D. It has successfully developed the “New High-Performance Fluorine-Lined Butterfly Valve with Large Diameter 1800mm/2000mm” and the “Second-Generation New Sealing Balanced Control Valve.” Both innovations have been filed for national invention patents, representing world-first achievements. They have passed provincial-level technical appraisal, with performance metrics leading globally. Combining high technological sophistication with strong practicality, these products have gained widespread user recognition. With support from various sectors, the company has grown into a leading enterprise in China's corrosion-resistant valve and pipe fitting manufacturing industry. Its main products include gate valves, globe valves, ball valves, butterfly valves, plug valves, diaphragm valves, throttle valves, and control valves.
