Zhejiang oneist valve Co., ltd is located in Wenzhouj Oubei where famous for beautiful landscape and pump &valve Hometown of China, it is a specialized in resear chment, development, production and sale various of butterfly valve as well as particular valve. Main product such as three dimensions eccentric metal seal butterfly valve, F4 seal butterfly valve, rubber butterfly valve, ventilated adjustable butterfly valve, pipeline flexible device, etc. All products strictly according to GB standard, ANSI, API, DIN, BS, TIS, ISO, etc.
Utilize CAD, CAM to design and manufacture, devote to improve performance of butterfly valve and develop new product.

This company has been passed the attestation of ISO9001 and strictly comply to ISO9001 to manufacture. The product has been widely utilized in petroleum, chemical industry, urban construction electric power, water conservancy etc.