>If people in China are willing

What makes you think the workers have any other choice? They're not "willing" if it's wage slavery.

What makes you think the people injured by pollution are willing? When exactly did they give their consent in this transaction?

(the knee-jerk response to both is "government regulations", but those are so thoroughly captured/corrupted that no real consent is transmitted)

>If I bought from a US companies most of the money would go to a rich 1% new yacht and new iphones

This seems equally likely in China.