The active calcium carbonate produced by our company is modified and activated on the surface of inorganic powder by using multi-functional surfactants and compound efficient processing AIDS. The modified modified calcium carbonate powder has the characteristics of high whiteness, uniform dispersion, good fluidity, good gloss and large filling amount. It is a high-grade filling agent with high filling amount. It is widely used in rubber, plastic, plastic doors and Windows, PVC pipe fittings, tires, soles and other industries.