China makes are products because they have cheap labor. Not taxes.
It's both.
Do you think the transportation costs are nonexistent, or could possible offset the labor cost differences?
Consider these four transactions when thinking only in terms of how taxation affects them.
US company sells to US customer.
US company sells to foreign customer.
Foreign company sells to foreign customer.
Foreign company sells to US customer.
OK, some refinement, from a federal taxation viewpoint:
US company sells to US customer:
Product sells with the added cost of taxation from production taxation to the customer. One tax added.
US company sells to foreign customer:
Product sells with the added cost of taxation from production taxation, and the receiving countries consumption tax. Two taxes added.
Foreign company sells to foreign customer:
Product sells with the consumption tax added to the consumer cost. One tax added.
Foreign company sells to US customer:
No taxes...
Now which has the competitive advantage?
No tax over two creates a huge trade imbalance.