I've used the site to sell XPM and PTS shares for CNY and I've purchased back BTC

A few weeks ago they had the best Ask price for XPM and PTS.

Google translate does a good job on the main page. 

The account creation page in english is here : http://zc.qq.com/en/index.html

Getting support is a bit more complex, last week they had wallet issues with withdrawls.

You need to install the Chines Tencent QQ chat software and reach one the English speakers; TAME ID 46514171 

I've never lost any coins here, but I send in trade, and send out, never leaving any balances.