You would be smart to ask over on
www.mychinamoto.com as well. There are several ex-pat (Europe and N. America) members who live and work in China and ride the 'local' bikes. Yingang/Massimo (Massimo have been around a few years, but dealt with different manufacturers and Yingang are new to them) and DongFang are two of the more recently imported (N. America) brands that seem to have done some homework and seem to have decent bikes overall. However, they are new here and don't have many owners, at least here on chinariders, other than the DongFang bobber which has a growing 'cult' following. One of the Chinese-based members of mychinamoto bought the 'naked' Yingang 250 sport bike and reviewed it on a thread. It seems to be a decent bike other than the very sloppy welding he found all over the frame on his bike; but he bought and owns the bike in China--but he does have direct communication with them, so that might help you out if Massimo didn't follow through with something...