Zhejiang Guanlong Mechanical Valve Co., Ltd. is located in Oubei, near Oujiang River, connected with Wenzhou City by a bridge, and close to the tourist attractions Yandang Mountains and Nanxi River. With outstanding talents and picturesque scenery. 
Our company is a medium-sized specialized manufacturing enterprise that integrates design and development, production, sales, installation, and service for water supply and drainage valves. Our main products include: check valves, hydraulic control valves, water pump control valves, flow and pressure regulating valves, filters, exhaust valves, etc. The company also undertakes the design and manufacturing of various non-standard valves externally, and can also produce according to the drawings or samples provided by users. Our products cover all parts of the country and are exported to the Middle East and Southeast Asia. Widely used in industries such as chemical engineering, oil extraction, papermaking, construction, fire protection, electricity, water conservancy, and water supply and drainage. The product has unique craftsmanship, a beautiful reputation, and is highly trusted by users.
After nearly 20 years of development and self-improvement, the company has excellent large and medium-sized machining equipment, innovative product design, advanced structure, exquisite craftsmanship, excellent production, and complete testing methods. Passed ISO9001 certification in 2003, obtained TS pressure pipeline component manufacturing license in 2007, obtained A2 pressure pipeline component manufacturing license in 2015, and passed CE certification in 2016. Under the strict quality assurance system and orderly control of the enterprise management system, the enterprise has reached a high level of design and development, manufacturing, inspection and testing.
The enterprise adheres to the business philosophy of "everything is for the user, everything comes from innovation", and sincerely adheres to the humanistic concept of "people-oriented and interdependent", in order to shape a unique corporate culture, enhance the market competitiveness and development potential of the enterprise, meticulously cast with a new concept, and continuously deduce unique "crown valve" masterpieces, with a more realistic spirit and higher quality products More comprehensive services are dedicated to users.