Which market category does this sustainable product belong to?
I'm from Canada and I work on policies supporting "clean technology" development, but its a very nascent sector from a statistical standpoint.  Statistics Canada only recently formalized a (very imperfect) definition, and our federal export development branch politely puts your problem this way: "For most Canadian cleantech exporters, the ASEAN markets are remote and not well known. Companies who feel that these countries may provide export opportunities should consult with Export Development Canada and the Canadian Trade Commissioner Service."

If you want to do some tough research, I would use search terms like "clean technology", "environmental goods and services", "water management", "land reclamation", etc. But in short, you're coming up dry because there's very little out there.