The truth might get this moved to the Political forum.

China can make stuff insanely cheap. Everything is stacked on their side.

Cheap Labor,
Little or no overhead like workers comp, retirement, healthcare.
No worker rights, long hours and unsafe working conditions the norm.
No unions to protect the workers
No EPA to drive up production costs with regulations.
etc.
etc.

Basically China is working like America did in the 1800's but selling in a modern market.