1.Identical grain size ,low oil absorption value.

2.To reduce the cost of products ; to make products have good foamed effect.

3.To enhance hardness,rigidity,size stability ,fire-retardantness,glossiness of products.

4.In rigid PVC products, it can accelerate gelation, enhance cold impact strength, eliminate plate out, and improve surface gloss.

1. In rubber manufacture: Calcium carbonate was the earliest filler used in the rubber industry. It can enlarge the capacity in the rubber products, for saving the cost. It also enhance the tensile strength, abrasion and tearing strength.

2. Plastic manufacture: As the framwork in plastic products, keeping stablity of the  products, strengthen the products, keeing surface smoothly. Since the calcium carbonate is hight white, it can place the expensive the white ployethylene, for whitening the plastic products.

3. Paper making: Whitening the paper, and as the fller, can reducing the pulp, for saving the cost etc.