Changzhou Calcium Carbonate Co., Ltd. is a large-scale professional manufacturer of calcium carbonate series products with the most extensive product range, ranking second in the national calcium carbonate industry. The registered capital is 50.8 million yuan. The main products include over 10 varieties such as nano-grade calcium carbonate, fine active calcium carbonate, light active calcium carbonate, light (precipitated) calcium carbonate, heavy and heavy active calcium carbonate, with an annual sales volume reaching 200,000 tons. These products are primarily used in industries such as plastics, rubber, coatings, paints, papermaking, toothpaste, and food. Among them, the market share of specialized anti-chip coating grade nano calcium carbonate exceeds 70%, and the company provides secondary support to major domestic automobile manufacturers including FAW-Volkswagen, Shanghai Volkswagen, General Motors, and Ford. In recent years, the company invests tens of millions annually in developing new products to meet the evolving market demands. The products are sold nationwide and are particularly favored by special users with high-quality requirements. Additionally, the company holds the right to engage in import and export operations independently.

The company's products have passed the ISO9001:2000 quality management system certification, and the environment has been certified under the ISO14001 management system. It has also obtained the AAA credit rating certificate and was recognized as one of the Top Ten Publicly Trusted Brands for Well-Known Calcium Carbonate Products in China. The company holds 13 utility model patents and 4 invention patents, serves as the main drafting unit for national standards, and operates a provincial-level nano engineering R&D center and a municipal-level engineering center. It is recognized as a National High-Tech Enterprise. The "Wunan" brand products, including WN502 nano active calcium carbonate for coatings, fine active calcium carbonate, WN501 nano active calcium carbonate for rubber and plastics, and WN505 functional calcium carbonate, are designated as high-tech products in Jiangsu Province. General Manager Huang Haiping serves as the Vice President and Deputy Leader of the Expert Group of the China Calcium Carbonate Association. The production equipment and technical level rank first in the domestic calcium carbonate industry. The equipment utilizes Siemens PLC fully automatic control systems, ensuring stable quality during large-scale production. The company is equipped with the most advanced domestic testing instruments, including laser particle size analyzers, BET specific surface area analyzers, HAAKE rheometers (made in Germany), and transmission electron microscopes (made in Japan).

The company provides comprehensive services including application support, development, and technical consultation. The success of the "Wunan" trademark fully reflects the company's dedication to serving its customers with enthusiasm. Whether today or in the future, the company is your reliable and trustworthy partner. We warmly look forward to collaborating with you!