And you know this how exactly?
There are a lot of sources. The one is quite credible credible: http://www.globalslaveryindex....
The global slavery index only includes people that are known to be slaves. This doesn't include the mass amounts of dormitory employees that, due to economic conditions manufactured by the government, work for nearly nothing and can't afford to live outside their factory camps.
Your argument would be more credible if the US and EU didn't have manufacturing sectors equal to or larger than China's manufacturing sector.
So you are saying that slave labor is OK because China's economy isn't as big as the US and EU?
I have a stamping press in my plant for making wire leads. Operating this press requires some of skilled labor to set up and then it is all automated. No amount of cheap labor from China can undercut us on price, we're fast and we can pay our people good wages too.
Have you been to China and seen what those factories look like? They too have automated systems, its just the people setting it up are working below US minimum wage. China can get people to work far cheaper. The Chinese can duplicate just about anything designed and built in the US or anywhere else. The materials are cheaper because China has far less concern for how they treat the environment, and the supply chain also has equally cheap labor and, essentially, vertical integration.
There is no trick. It is simply a race to the bottom. And North America is being led into this race by a Communist country who for years had stated it was bent on destroying capitalist systems. We'd be best to leave China alone. Unfortunately, greed (Walmart profit margins) and some skewed dogma about "specialized labor" is making it difficult for most to see the big picture here.
I urge anyone that gets the chance to visit factories in China to take it. It really is an eye opener and will change your opinion, if you are one to think US manufacturing is safe because we "work smarter".