Henan Chengxiang's main products cover two-way metal hard seal butterfly valve, two-way double eccentric soft seal butterfly valve, top-mounted full bore soft and hard double seal hemispherical valve, two-way metal hard seal rotary ball valve, elastic seat seal gate valve, telescopic joints and other series of products. Caliber from DN100 to DN4000. Products through TS (special equipment production license) ISO9001 (quality management system certification) ISO14001 (environmental management system certification) ISO45001 (occupational health and safety management system certification) and other certification.