回复：回复：朋友在国内工厂生产汽车空调过滤器(Cabin filter)，希望开拓美国市场，这里有作汽车配件的吗？

You have two directions. One is car maker, another one is aftermarket. Sale to car maker is more difficulty. Aftermarket is easier to start. However, just as any new business, you have to plan one or two years to develop the channel. Of cause, you can be the lucky guy got a good successes with very short time.