Your experience is a great reminder for us to be careful. Don't get me wrong but the worst part isn't what you have had to cope with but what you may have to deal with now. Changing jobs in China, provided that you want to stay in the country, has become troublesome. The system gives more power to the employers today than a bunch of years ago, and so when they decide you aren't "fit for China" you may have plenty of issues to sign with another employer in the nation legally. What you really need is a release and ... yes ... recommendation letters from the current company under which is your work permit; or, perhaps a favorable evaluation assessment from the local foreign expert bureau. Otherwise, you may have problems getting your legal employment status elsewhere around.

I am employed by AIEP but have decided to leave due to the unprofessional acts, lack of support, and inconsistent management of the company