... duplex, Super duplex 2. Process: investment casting, hot forging 3. Product form: finished or ... casting companies in East China, holding 3 exclusively invested enterprise---Zhejiang Shidai Casting Co., Ltd, Shanghai Kefeng Alloy Casting Co., Ltd and Wenzhou Keding Machinery Manufacture Co., Ltd ... and technical superiority, specified in producing valves, pumps, vehicle fittings, marine fittings ...