It is white powder, water insoluble, acid soluble and generated from high quality Limestone through high temperature with arts, the powder in white and fine with light proportion and the purity of CaCO₃ can be 99% above. It can be widely used in plastic, rubber cable, coatings, paint and paper making industry as the filling agent. Specifications (fineness) throughput rate (%) Whiteness CaO (%) around.