Any trustworthy property agent in beijing?

I have an apartment in central Beijing in a high-class compound but cannot find a trust-worthy agent to handle the rental. Because I live abroad, I need an agent who is reliable. Anyone knows one?
Meanwhile, if anyone looking for a 1-bedroom apartment on East 2 ring road in Dongzhimen to rent, contact me.

I am now living in New York and want to rent an apt in Beijing, please contact me