as we all know, china is a big export country with low cost and competitive quality, while the big and famous china local companies will also willing to do business with the large and international companies abroad, so it is a little difficult for many small companies who has not enough quantity and capability to do business with them, and they know a little about china, what's more, the communication and culture are also the block to start business with china vendors, so they need to find one trustworthy agent to help them, searching vendors, negociate price, to be a representative for them in china, and so on, which can save them a lot of time and money, and they can also get great profit from them, while the problem is how to find one trustworthy agent.
in my opinion, agent plays a very important role in import-export business, so if you have chance to find one, you would better to communicate with him or her, to know their thinking and idea, if it is an trustworthy agent, he would do anything to benefit you, and he can give you their own suggestion based on chinese market.
if you need any agent help in electronic field, please have a look at my text after you pointing at my name
good luck
linda