Impadoc S.A
Operates fields of high purity calcium carbonate in Columbia for industrial use. In addition the company manufactures products such as kaolin, talc, dolomite, barite, and calcium sulfate as dehydrate and hemihydrate.
http://www.impadoc.com/

Shanxi Jiaocheng Hongxing Chemicals Co., Ltd.
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http://www.china-hxchemical.com

The CL Ranch
Manufactures and markets natural gypsum and calcium sulfate dihydrate for agriculture, livestock and industry.
http://www.naturalgypsum.bigstep.com/

Shandong Baoyuan Chemical Co.,Ltd.
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http://www.baoyuanchem.com

Hongqing Chemicals Co., Ltd.
Hong Qing Chemicals Co.,Ltd. can supply the best quality copper sulfate , ferrous sulfate series products,the main products include copper sulfate for feed industry, copper sulfate used in electroplating solution for semiconductor, circuit board and other industries , agricultural-used copper sulfate , ferrous sulfate used as a fertilizer, a feed additive,water treatment and cement additive to reduce chromium(VI) etc.
http://www.hongqingchem.com/

DKT Co.,Ltd.
GreenCal, Agricultural Gypsum high purity gypsum. GreenCal is suitable for agricultural to improve soils structure with natural substances.
http://www.dktgypsum.com/

Mionix Corporation
Offers FDA/USDA approved food safety products based on acidic calcium sulfate. Kills pathogens and prevents regrowth on meat, poultry, hot dogs, and cheese. Company and product information.
http://www.mionix.com/

Tianjin Development Zone Xinda Chemical Technical Development Co.,Ltd.
Tianjin Development Zone Xinda Chemical Technical Development Co.,Ltd.(TJXD) is a leading professional company , one of the outstanding developer
http://www.china-zncl2.com

Peters Chemical
Peters Chemical Company is one of the leading suppliers of industrial and chemical lime (calcium oxide and calcium hydroxide, lime kiln dust) and agricultural limestone in the Northeast. We carry a full line of icemelters, including calcium chloride, magnesium chloride, sodium chloride, potassium chloride, urea, sodium acetate, calcium magnesium acetate and other airport deicers. Our fertilizer customers include landscapers to golf course superintendents
http://www.peterschemical.com/

Cimbar Performance Minerals
Barytes, organophilic clays, strontium sulfate, barium sulfate, bentonite.
http://www.cimbar.com/