Omya AG
Minerals Technologies
Imerys
Huber Engineered Materials
Guangxi Huana New Material Technology Co. Ltd.
Shiraishi Group
Shanxi Lanhua Huaming Nanometer Material
Maruo Calcium
Jiangxi Jiufeng Nano Calcium Carbonate CO. LTD
Takehara Kagaku Kogyo
Shanxi Xintai Hengxin NanoMaterials Technology Co. Ltd.
HUBEI KAILONG CHEMICAL GROUP CO.LTD
Changzhou Calcium carbonate Co. LTD
Guilin Jinshan Chemical Industrial CO.LTD