ShenZhen ZhongBaoDa Chem Industrial Co., Ltd.founded in the Chinese production base of nano calcium carbonate-ShenZhen City,owns two production bases of nano calcium carbonate in ShenZhen City as well as one mineral resource base. As the only national key high-tech enterprise in the nano calcium carbonate industry,Zhongbaoda ranks first in the production and sales of CCR,CC,SCC,BT-3,NA and CC-OT nano calcium carbonate product, which are widely applied in plastics,rubber,PVC cable,Sealants,adhesives,print ink,coating materials,paper and high polymeric compounds to improve the rigidity,toughness,flexural strength of materials and surface smooghness of materials and to reduce the cost of  production. Our pharmaceutical calcium carbonate conform to CP,USP,EP and BP Standard. It is also the