In deed.
I recently got a plesant suprize when i went to order some new feeders for my PNP machine from my chinese supplier ( whos been relaible, well priced and all those good thigns ).. He said, that i had a $100 credit, because i had introduced someone to him. Totally suprizing to me, and i said, theres no need, I was just helping someone else out with a contact to solve their problem. Likewise my freind would give me a good suggestion if he could. But in Chinese business, there is an expectation that you should pay for these introductions, and its quite normal.
And thats when when get the clash of cultures that cause these kind of dramas. Its best we take the time and a good pinch of understanding to work through this stuff.. ( on both sides )