OK,now let me give you the webaddress:
1、http://www.btc38.com/trade.html?mk_type=btc&btc38_trade_coin_name=pts ( It have not English interface,but only Chinese interface.)
In this way, you must use the QQ account wich can download from
www.qq.com2、https://bter.com/trade/pts_btc ( It have English interface and Chinese interface. )