The dealer you spoke with is telling the truth about the ATVs. Chongqing HuanSong Industries (Group) Co., Ltd. is the Yamoto Manufacture. Here is the original Yamoto U.S. Distributor. Shinima (a.k.a.Yamoto)
Shinima sold the Yamoto name to Patriot Motor Corporation. Patriot dropped the Yamoto name after they got sued by Yamaha.
As far as which Chinese quad to purchase for your little rider is going to be up to you. The quads are all going to be similar in looks and quality no matter which brand or manufacture you purchase from. What you really need is good dealer support, and that dealers name is Raceway
. Raceway carries the Jetmoto and Kazuma line for smaller riders. They even carry Unison if your looking for a little better quality quad over a Chinese model.
If you can trust the dealer that is selling the 110 for $700.00 and he can prove to you he stocks parts, then I would say go for it. The 110 is a decent dirt quad. If your looking for a sand quad a two stroke would probably work best.
Good luck with your purchase.