> It's labor that is abused, sometimes enslaved.
Maybe 20 years ago? Wages are rising salaries and employers are playing nice so their employees don't jump ship elsewhere. The day of your employer keeping your ID card captive is long gone (unless you are a naked official).
> China has environmental regulations but they don't always demand compliance.
That was also a lot more common 20 years ago than today. These days, cities/provinces are held accountable for AQI reductions, so pretend inspections no longer help their metrics. But I totally get it, there is a lot of material from 2000 to 2015 or so, and they basically live forever on the internet.