About Zhejiang Aolong Valve Manufacturing Co., Ltd. Founded in 1985 and located in Wenzhou—China’s "Valve Capital"—Zhejiang Aolong Valve Manufacturing Co., Ltd. is a leading manufacturer specializing in the design, production, and sales of industrial valves. With over 30 years of expertise, Aolong has grown into a modern, technology-driven enterprise serving clients worldwide. Our 8,200 m² facility houses more than 120 employees, including a skilled team of engineers and technicians. We are equipped with advanced machinery, precision testing systems, and rigorous quality control processes, ensuring a 100% pass rate on all outgoing products. Aolong offers a wide range of valves—gate valves, globe valves, ball valves, butterfly valves, check valves, control valves, and more—covering GB, ANSI/API, DIN, BS, and JIS standards. Products can be customized for high temperature, low temperature, high pressure, and special materials such as duplex steel and Monel alloy. Sizes range from DN10 to DN3200, with pressure ratings up to 2500Lb and temperatures from -196°C to 815°C. Our valves are trusted across industries including oil & gas, chemical, petrochemical, metallurgy, power, water treatment, and construction. Aolong products are not only sold nationwide but also exported to the United States, Europe, the Middle East, Southeast Asia, and beyond. Driven by innovation and integrity, Aolong is committed to delivering reliable valve solutions and building long-term partnerships worldwide. We look forward to working with you