HCTI aka Nanotech Industries are both the licensee to all of their patented products. HCTI's site differs because they are concentrating mostly on just the polyurethane but that does not mean they are not out to get business for everything else they have if the opportunity comes across them. Being they are still a small company it makes sense to concentrate on their main offering first.
d/b/a = doing business as
"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. "