SUFA Technology Industry Co., Ltd. CNNC engages in the research and development, design, manufacture, and sale of industrial valves in China and internationally. The company offers utility, ball, check, shut-off, gate, and nuclear valves. It provides its products under the H and SUFA brands for petroleum and gas, oil refining, nuclear power, electric power, metallurgy, chemical, shipbuilding, papermaking, and medicine industries. SUFA Technology Industry Co., Ltd. CNNC was founded in 1997 and is based in Suzhou, China.