Zhengzhou Yatai Metallurgical RefractoryCo., Ltd. is specialized in researching, developping and manufacturing ofrefrectory materials. On January 27th, 2011, We signed the Ceranmic SandContract with Zhengzhou Yatai Metallurgical Refractory Co., Ltd.. This contractincludes 2 sets of Rotary Kilns and 2 sets of Coolers.