Omya AG
Huber Engineered Materials
Guangdong Qiangda New Materials Technology Co. Ltd.
Essential Living
Neelkanth Finechem LLP
FUJIAN SANMU NANO CALCIUM CARBONATE CO. LTD.
Holcim
Minerals Technologies Inc.
Imerys S.A.
The Cary Company
Calcinor
Longcliffe Quarries Ltd.
Columbia River Carbonates
Parchem Fine & Specialty Chemicals
Wolkem India Ltd.