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Zhengzhou Ruitai Refractory Technology Co., Ltd. is a subsidiary of China Building Materials Group's Ruitai Technology Company. It was established in 1984 and is a full-service enterprise integrating R&D, production and masonry. It is the best enterprise of "Henan Star", one of the top ten technological innovation enterprises in the building materials industry, an excellent enterprise of China Refractories Association, and a green factory of the first batch of refractory materials in China. The company's main products are low thermal conductivity multi-layer composite mullite for large-scale cement rotary kilns, brick magnesia iron spinel bricks, magnesium aluminum spinel bricks and coal injection pipe casting materials, kiln mouth special casting materials, anti-crust cast…