How are calcium carbonate grades segmented by application and price in China?

How are calcium carbonate grades segmented by application and price in China?
The Chinese market distinguishes sharply between industrial, food-grade and pharmaceutical calcium carbonate, with pricing tiers reflecting purity and processing. In supplements, calcium carbonate is the cost-effective workhorse—it contains 40% elemental calcium, the highest among common calcium salts, versus 21% for calcium citrate and only 9-13% for lactate or gluconate forms. Consumer products range from under 1 yuan per 100 mg elemental calcium for basic tablets to over 5 yuan for complex formulations with added vitamins and minerals. For industrial uses, ground calcium carbonate dominates as filler in paper, plastics, rubber and coatings, while precipitated and nano grades command premiums for specialized applications. The 2024 Chinese market was valued at 26.6 billion yuan, growing to an estimated 27.6 billion yuan in 2025. Regional producers like Guangxi and Jiangxi compete largely on cost, while premium nano-calcium carbonate remains a higher-margin segment.