Henan yililai Industrial Development Co., Ltd. is located in Henan, Zhengzhou, the company focused on refractory materials, refractory products,refractory project and the related industrial product , which provied the design service, production, engineering services .this company subordinate Dengfeng high alumina cement factory, Gongyi Calcined Bauxite factory, Yima high aluminum homogenizing material factory, Henan Xinli crushed graphite factory and Yingkou Sheng Naifu refractory material Co., ...