Sorry if this has already been answered, but other then DLUSA.NET, is there actually a DL website? Who is the manufacturer of these great engines?

DL is a lank, hard working China man from the Shanghai area. He lives by his dealer network, so will not have much use for an own web page. The dealer also influences his product/quality/price policy, which probably is different for each country.
And yes, these guys love RC flight.

Thanks - I've searched and searched but couldn't find anything. I just wanted to learn more about the company, hoping to find more information, what's new, etc.

=R

I havent dealt with dlusa myself... but from what I read he is staying on top of things... I doubt there is anymore you can learn from anyone else. He knows whats going on.