CETCO is a wholly owned subsidiary of AMCOL International. Headquartered in Arlington Heights, Ill., CETCO offers waterproofing, drilling, construction, and pond and seal roofing products. It manufacturers and markets a range of waterproofing membranes, drainage composites and a variety of installation accessories. The company provides services for industrial, concrete waterproofing and gas-related drilling applications. CETCO s Lining Technologies Group is one of the leading companies in the fields of geosynthetic clay liners and soil sealants in the United States. It operates several manufacturing facilities in North America, Europe and Asia through a sales and distribution network.