They don't even give a damn about their own people. Why would you expect them to give a second thought to the environment?
Okay, answer this question: who buys all the cheap junk that China produces? And what percentage of those people are willing to pay more to ensure they don't treat the environment carelessly? And why are those multinationals turning a blind eye to the actions of their suppliers? There's no moral high ground for people to complain on the internet using machines that are made in China.
The question you should really ask is who doesn't? Everyone does because almost everything is made in China.