• Lanxess AG
• Chongqing Chuandong Chemical (Group) Co. Ltd.
• Zibo ruibao chemical co. LTD.
• Henan Botai Chemical Building Material Co. Ltd.
• Shandong Baoyuan Chemical Co.Ltd.
• SIDLEY CHEMICAL CO.LTD.
• American Elements
• Minerals Technologies Inc.
• Cerne Calcium Company
• Hangzhou Focus Chemical Co. Ltd.