We are offering calcium carbonate powder. Calcium carbonate featuresâ calcium carbonate have table chemical properties, no changes when exposed in the air, almost insoluble in water.compact crystal structure, low impurity content, smooth surface, even granularity, good processibility and low oil absorption value. Calciumâ carbonateâ usesâ calcium carbonate is widely used in paper-making, composite materials, plastic pipes, section material, plastic works and cables, coating, oily paintings, powder coatings, medical, food, waterborne coatings.â 1.in paper-making industryâ improve the surface luster, whiteness and paper's smoothness.â 2.in plastic industryâ 3.greatly increase the bonding strength and mechanical properties of the surface of composite materials, can plasticize the materials and can improve the luster and quality.â 3.in rubber industryâ increase products'streching, heat-resistant and anti-aging properties.â 4.in coating industry increase the thickness of the coating film, and improve the resistance to wear and weathering resistance as well as the painting area.and it contains no heavy metal and it the best choice of the filler for powder coating without heavy metal.â 5.bonding strength and mechanical properties of the surface of composite materials, can plasticize the materials and can improve the luster and quality.â packing & shippingâ calcium carbonate packed in pp woven bag or kraft paper bag.â