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Kelong Micro-powder Co., Ltd. is a private high-tech enterprise of heavy calcium carbonate in China,raw material mines with reserves exceeding 100 million tons,covering an area of 528 mu, with more than 70 production lines, annual production capacity of more than 2 million tons.Our products are widely used in artificial stone, rubber, plastic, paper, paint, ink, building materials, daily chemical industry and other industries.