There are alot of answers out there, but most of them misses the bulleye.
I will put it in simple terms for you.
1) China gives you all the rights you want, BUT if you commit a crime or voices against the communist party. Everything will be stripped from you including your rights. NO one will even know you disappeared, because China controls the media! Simple as that.
2) The industrial accidents, quality control etc you mentioned? That has nothing to do with human life. Its called they don't give a crap. BECAUSE they are only concerned about themselves.
You should know the standard of education in China is low.
Simple things like don't throw cigs out the balcony once u are done with them, sort out the trashes and of course respect others.
These are things the older generations in china don't know.
3) The difference between Chinese cultural and western culture would NOT generate misjudgement for negotiations. Top negotiators would have a fairly good idea about the people they are dealing with including their culture.
Negotiations don't workout because its matter of who gets the most benefit.
Take the Value of yuan for example. Chinese say of course their yuan is not artificially undervalued because they gives them an edge in selling their products because they are sooo dam cheap!
They are stealing everyones jobs in every country.
They know it, but they deny it because they want to maintain the competitive advantages.
4) Yes it is unreasonble for western countries to expect China to do anything about human rights, because IF all the people in china has freedom of speech and critize everything then the Communist party will cripple.
You underestand is not China doesn't want to go in that direction, its because Human rights and environmental issues are BARRIERS for the Government to take full control and rise to super power.
Look at China now.. if they agree to tackle the environmental issue, that will pose more of a problem for everone to adapt rather than help with the businesses in china to push out the product.
They know how to play politics and maintance TWO FACED, Say one thing, do another.
If international MEDIA critize them, they will always say " You are accusing us on groundless means, without any evidence, therefore you are hurting US- China relationship"
How many times have u heard them say that. They don't admit that they are wrong, when they do the wrong things like HACKING GOGGLE.
Because that makes them Loose FACE.