Calcium carbonate masterbatch is an excellent plastic high-filler modified filler product. It is mainly composed of calcium carbonate and carrier resins such as polypropylene (PP) or polyethylene (PE). This product has a fine and pure texture without impurities, good compatibility with other base materials of the products, superior processing performance, good dispersion, large amount of filler addition, non-toxic, not prone to moisture absorption and color change. Its high whiteness and quality cost performance are significantly higher than domestic calcium carbonate fillers. It can increase the hardness, whiteness, transparency, glossiness, smoothness of plastic products' surfaces, eliminate water marks on the products' surfaces, and improve the appearance of the products.