... Material: Stainless steel, duplex, nickel alloys, etc. Butterfly valve body1. Meterial: stainless steel 316L, CF3M2. Process: investment ... Shanghai Kefeng Alloy Casting Co., Ltd and Wenzhou Keding Machinery Manufacture Co., Ltd. And it is the member of ... own products characteristics and technical superiority, specified in producing valves, pumps, vehicle fittings, marine fittings and engineering ...