I'm going to voice some outrageoug opinions here, but my experiences support them:
-some places (Red China, for example) have a set of ethics that say "close enough" os OK, and have no tradition of standing behind their work. You buy it, it's yours, period. Not what you thought you were buying, represented as something else, too bad.
-some places have have only respect for someone who is clever enough to cheat them; they pride themselves in being so clever that they can, and do, cheat as a matter of course. You want UL sticker, we put UL sticker on. No problem. Also, what is UL?
So what to do? Be wary of products whose only US site is the sale office.
On the other hand, reputable US firms, with a reputation for quality, are sure to look carefully at whatever they put their name on.
Finally, know what things mean. UL tests to certain safety-related standards; whether something is a piece of junk or not is another issue entirely.
