I did some digging tonight and I think I've found something interesting/informative for those of us following the new budget Chinese bins.
Heres a company that I kept running into:
Kunming Yuanda Optical
They seem to make 3 tiers of roof bins which correspond well to those available from Zen, EO, Hawke, etc. You have the ~$100 model, the ~$200 model and the ED model. So far, this is the only company that actually seems like an actual manufacturing facility and not just a distributer. I ran into a few distributors but you can tell because their catalogs are full of other crap while Kunming Yuanda Optical seems to keep a very tidy catalog not cluttered up with cheap(er) stuff.
Another interesting note is that Kunming Yuanda Optical also has had a presence at the Las Vegas SHOT shows which gives them direct access to US investors which might explain how they got their contracts with the few US companies that are carrying them now.
I might have to check them out at the next SHOT show if they are on the vendor list and ask them some Qs about their design/mfg process and wholesale prices.
Anyway, if anyone else is interested in sleuthing these bins, be my guest and use this thread.
I think Kevin P. also mentioned Kumming in one of his earlier posts about Chinese manufacturers. It is always difficult to tell exactly who is making what though as there are so many variations of any given product...and many of them look very similar. Take the open-bridge ED bins for example. Though some of them are made by Bosma there are others that are made elsewhere. The similarities in design are so close that one wonders if there is not a base "master" design that all are working off of.
Well I did a little digging on the name you posted. I did not find them listing just three models but actually close to two dozen. Some of them look familiar. The first one below looks, externally, to be very similar to one of the bins I currently have in my possession.