Alot of people make the mistake when they contact a Chinese manufacturer by "negotiating" with the price.
For example, the Chinese say yep we can make what you want, it's gonna going to cost $50 each, for example. So called business man says no, I want to pay $35.
The Chinese agree to the lower price almost everytime but the quality is halved. And they won't tell you this !
When we deal with them for work, we get a quote for each piece to be made, we tell them we will give you 10% more per piece but it has to be exactly the way we want it. Never have any problems with them, and the quality of their work is outstanding.
You bargain with them = you get crap, be reasonable and pay abit more = you actualy get decent quality.