I use Bitfinex for that. It's good and trustworthy. There are allot of things we haven't know about, It took me like 2 months to use it properly as per my need. Good luck.
after bitfine hack, trading in bitfinex still safe, withdraw and deposit normal or not
and bitfinex china land(hongkong) exchanger too, and now all china exchanger problem about withdraw, still wait investigation until march can normal withdraw again