Competitive Analysis AMCOL International of United States Wyo Ben Inc of United States Midpoint Chemicals Company M-I Swaco of United States Volclay International of United States Kemira of Finland Alfa Aeser of United States Charles B. Crystal Co. Inc. of USA Cimbar of the United States Amsyn Inc. of United States. Regional Analysis Geographically, the global bentonite market has been...