They do not need to as their cost of living is much lower so they can spend less on labor.
But still in indirect ways they do protect and endorse their domestic production. Also different tax structure (like VAT) and government involvement in things like health care or education can substitute for tariffs.
We have gov't interference with health care as well.
It just seems all very unjust to me. If these people want free trade, then let it be free and mutual, not a shake down.
With our power and might, we should be doing the shaking down.