If you do a little searching on Google, you find evidence of Tony Yu all over the place. He, or an associate, has a place they call Hobby.com that is at 909 Conklin Street Farmingdale (middle of L.I.) NY 11735. There is a cell phone 631 845 7223 shown.
If you order something from him here is what the typical tracker will look like . . .
2007-01-13 17:52:00 Zhuji County Posting
2007-01-13 18:05:00 Zhuji County Despatch from Sorting Center
2007-01-13 18:13:52 Zhuji County Arrival at Sorting Center
2007-01-13 21:32:47 City of Hangzhou Despatch from Sorting Center
2007-01-13 21:34:54 City of Hangzhou Arrival at Sorting Center
2007-01-14 10:14:00 UNITED STATES OF AMERICA USSFOA Arrival at Sorting Center
2007-01-14 10:15:00 UNITED STATES OF AMERICA USSFOA Handed over to Customs
2007-01-14 13:45:00 UNITED STATES OF AMERICA USSFOA Released from Customs
2007-01-16 08:40:00 UNITED STATES OF AMERICA 78209 Arrival at Delivery Office
2007-01-16 11:11:00 UNITED STATES OF AMERICA 78209 Delivery
This is the name of the company in China is . . . .
http://www.willhobby.com/
All this is pretty well documented in Google and there is a lot of discussion about Tony Yu and the products he represents especially over on another modeling site. Read all this and decide for yourself.
We had a discussion about ASP last year in glow engines. Someone called the US Number. Call and quiz the lady and see what you find out about what she can ship you and where is the shipping point.
To order something from a USA contact and then the product be "drop shipped" from China is not that unusual. In fact, the service can be pretty much as good as ordering something that has to travel across the USA in time frame. In the above example it was 3 days to a Zip in Texas. It was a Will Hobby Transil ARF.
I've ordered from some of the stores in China and got good service. In fact I've had problems with some of the products and the problems were rectified with a RMA to a USA location.
My point is that the only official Sanye representatives in the USA are Hobby People for Magnum engines and Horizon for the Evolution glow engines. As noted in an earlier post, someone Emailed Sanye and the reply was that Horizon was the USA representative for ASP. And indeed they used to sell a lot of them. I've had ASP's from the old Indy R/C place as well as Horizon Hobby in the past.