The Daring Dufas wrote:

-snip-

The best site I've see for your question:

http://www.thistothat.com/

Good start- but note what they say when one of the this's is plastic
"There are so many kinds of plastic its hard to give advice here that
applies to them all. If possible try a small test in an area that
doesn't show. "

I suspect those chinese trikes are that accursed polyvinyl that
*nothing* sticks to.

Jim