Bill, I see that you are already registered as a commercial member. To post your product or service, there is a section of the Marketplace just for vendors. Click on the Classified tab at the top (ignore the drop-down menu) and look down the list of sub-forums for Commercial Posts and Products. That's your spot!
In answer to your other question, yes, the Burro
is an example of a molded fiberglass trailer. The exterior shell is formed in (usually) two large molds in the shape of the finished trailer. The pieces are then fiberglassed together to create a unitary fiberglass body, which is then set on a conventional lightweight trailer chassis. Sometimes the interior is built out in fiberglass, too (like the Burro). Others use traditional wood cabinetry inside. The main distinction between molded fiberglass and conventional construction is that the fiberglass shell is seamless and self-supporting. There is no framework of wood, aluminum, or steel inside supporting the walls and roof. It's different from framed trailers with a thin fiberglass skin.
In these parts, we think molded fiberglass is the best way to build a trailer, bar none!