Nano calcium carbonate is a newly product with newly formulator, It is widely used in PVC and cable industry as filler. Nano Calcium Carbonate is made from calcium carbonate dealt with coupling agents in particular to make them combine each other well by the function of chemical bond. The role of calcium carbonate is to make product have good fluidity and dispensability, enhance the characteristics of finished products, lower the cost of PVC products, improve the processability characteristics of the products. As the calcium carbonate is dealt with coupling agents in mucilage glue and increased dispensability, so it disperses uniformly in the glues and increases the strength and enhances the quality of finished products.