SUFA Technology Industry Co., Ltd. CNNC is a China-based company principally engaged in the design, research, development, manufacture, sale and provision of services of industrial valves. The Company’s main products include gate valves, stop valves, check valves, ball valves, butterfly valves, diaphragm valves and regulating valves, among others. The Company's valve products are mainly used in nuclear, petroleum, chemical engineering, metallurgy, electricity and other industries. The Company is also involved in blank manufacturing and other businesses. The Company distributes its products in domestic market and to overseas markets.