Nanjing Chenguang Group Co., Ltd. (NCGC) is a high-tech comprehensive mechanical manufacturer in China. We obtained ISO9001 certificate in 1994 and American ASME "U" and "U2" grade authorized certificate. We have been approved in designing and manufacturing pressure vessels of grade I, II and III. NCGC owns Servo Technology Research Institute, CNC Machine Center, Forging & Heating Treatment Center, Surface Treatment Center, Technology Institute and Measurement Center. NCGC offers two ...