... as filler and improver. Purity: 98%min. Appearance: white powder. Heavy calcium carbonate, also called ground calcium carbonate, is ... , paint, paper-making, rubber, pharmacy, feed, daily chemical, ceramics, adhesives and ink industry.Nameheavy calcium carbonateother name ... plastic, paint, paper-making, rubber, pharmacy, feed, daily chemical, ceramics, adhesives and ink industry.Packing25KG/PP PE BAG, ...