Given the total domination of Chinese products in almost all areas of
the
market, I woudl say teh Chinese are making exactly the quality level
that
we expect in the West...

There's nothing like "total domination." China only provides 15.5% of US
imports. Mexico and Japan, together, make up 19%. Canada is 16.4%. And
so on.

Is this based on dollar amounts, or per unit?

Dollars. If you tried to do it in units, you'd have to ask, units of what?

Units of product.

Of course the Chinese will have a smaller percentage of the DOLLAR value of
imports... their cheap prices is what brings it in.

If 90% of all imports only accounts for 10% of the dollar value of imports
then dollar value isn't a very good measuring stick.