Help importing from China

hi guys!
I'm a newbie and I do not want to get burned when dealing with Chinese wholesalers.
from the other posts I understand that I have always to
ask from payment with paypal or escrow but WHICH ARE THE OTHER USEFUL QUESTIONS TO ASK TO A CHINESE WHOLESALER?

I think some of the questions may be;
1 return and refund policy
2 samples
3 stock

any other ideas?
thanks a lot for your help

I am a seller in Spain and i have found that Link hidden: Login to view are very good. there products and real brand names and deliver is good when selling retail.
Alot of chinese companies only take wire transfer as a form of payment.
What are your interests items you want to sell?
Hope this info will help

We have established systems in China with wholesale buying offices direct from the manufacturers.......contact me if you want to talk about these solutions.