Colloid Environmental Technologies Company, better known as CETCO is the Construction Technologies segment of AMCOL International. CETCO offers solutions for commercial, industrial and infrastructure construction challenges worldwide. End markets range from waterproofing, greenroofs, sediment remediation, vapor intrusion to lining and capping. We provide expertise in transforming minerals and polymers into technologies that improve productivity and performance. From technical problem-solving to on-site supervision, we consult with customers to develop long-term solutions.