HENAN RONGANN THERMO-TECHNICAL NEW MATERIALS CO.,LTD., formerly well-known as the factory of Sanmenixia City New Yangshao Composite Materials Co., Ltd., has developed into a comprehensive corporation combining refractory raw material production, research, marketing and technical advice. Founded in 2004, our factory is located in Yangshao Town, Mianchi County, Sanmenxia City, Henan Province, with an area of 50,000 square meters. Our factory has assets of more than RMB 60 million. We have more ...