Zhejiang Guanli Valve Co,.Ltd is a leading manufacturer of knife gate &Segment ball valves.Guanli start business at 1992 and established in 2004 with oversea business. Company owned 2 manufacturing plants. The products with ISO,CE,TS approved.We commit to design and develop customized products.With many years foreign business, valve products keep improving. We hope guanli-made will be your first choose.