For all the uncertainty, Wonder Auto and other Chinese parts makers are growing quickly.

And the parts makers rely heavily on health maintenance organizations, when they provide any medical benefits at all.

Fewer than 30 Japanese parts makers have operations in the United States.

Many of the parts makers at the sessions here said they thought the figure was inflated.

Still, the going may not be as easy as some parts makers believe.

Others came from parts makers or other companies with U.A.W. workers.

So by the time a Chinese car lands here, it may well include features from all the world's top car and parts makers.

The parts the transplants buy from traditional American-owned parts makers tend to be of low value.

The plant is part of the parts maker Visteon, which is now a separate company.

The Japanese complained about similar attitudes by American parts makers.