We are on the most reads! $HCTI Nanotech Industries International, Inc. d/b/a "Hybrid Coating Technologies" (HCT) is a San Francisco-based innovator focused on improving the quality and safety of coatings and paint for industrial and commercial customers around the world. We are the exclusive licensee of Green Polyurethane™ coatings and paint – the world’s first- ever patent protected polyurethane-based coatings and paint products which eliminate toxic isocyanates from the entire production process (licensed by Nanotech Industries, Inc.).