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Calcium Carbonate is a compound with the formula CaCO3, the major component of limestone. In nature this occurs as a mineral found in three distinct crystalline structures, ie. calcite, aragonite and vaterite, these are special phases relate to the arrangement of the atoms in the crystal structure. And these distinct phases influence the shape and symmetry of the crystals. Industrial calcium carbonate is a semifunctional mineral filler including precipitated calcium carbonate (PCC) and ground calcium carbonate (GCC). PCC is obtained by a chemical reaction, while GCC is made by mills. The main advantage of PCC compared with GCC is resulting products can be controlled by certain parameters of the chemical reaction. GuangXi Huana products calcite or aragonite crystals PCC in different shapes: rhombohedral (quasi-cubic), ditrigonal scalenohedral, rose-like, prismatic, rod-like and rice-like. Vaterite is not stable and over time will transform into the other two crystal. While GCC is calcite.

Calcium carbonate has a wide variety of application such as rubber, plastics, sealant, construction, paper, paint and ink et al. GuangXi Huana specializes in the studying and manufacturing PCC and GCC with particle size ranging from 0.03 microns to 15.00 microns.

According to ISO3262 part 6, HUANA CCR and CC are ultra-fine PCCs with uniform particles, excellent dispersion, and high brightness. Their surfaces are organically treated by proprietary technologies. HUANA CCR and CC are functional fillers used in a variety of polymer materials. They provide great economic benefits in polymer production while greatly improving the hardness of the polymer, improving strength (tensile and impact) and enhancing the surface whiteness and gloss finish. CCR and CC would improve the processing properties of the polymer compound, especially for products which are based on rigid and plastic PVC. With outstanding ink-absorption and printability, CCR is widely used in the PVC calendered films in China.

HUANA GCC is a series of ground calcium carbonate powders. Based on the high-quality natural calcite and advanced crushing and grinding technology, HUANA GCC exhibits superior whiteness, low impurity, narrow size distribution and low oil absorption. GCC is seen to be irregular in shape, but it is in fact available with rhombohedral or prismatic particles. For various applications, different surface treatment technologies are employed for HUANA GCC series. In rubber, plastics, and paint, HUANA GCC is largely filled to replace polymer resin and reduce cost. And reinforcement and toughness could be realized while finer HUANA GCC is employed. Much pulp would be saved when HUANA GCC is applied in filling and coating paper. And high retention, brightness, opacity and strength could be obtained at the same time.