I haven't seen a pipe from China that I would consider even decent quality, and I've seen some that would probably be pretty dangerous to smoke out of. Toxic woods covered in lacquer.... it can't be the right way to make a pipe.
Now as to the pipe you are looking at, Rhamnus is a wood, like briar. I have no idea how it is treated or cured in the pipes you are looking at. There is obviously a cottage industry of "artisan" hand made rhamnus pipes, because they are popping up over here. They look hastily made to me.