This bookie is well known in Asia and I met him in all website for odds and stat.
Although 12Bet has not so great rating (BMR rates it 2 out of 5, and it's not even rated by SBR and WOSB), I use this bookmaker on regular basis and I have never experienced any problems with them till now.
I don't know what to say about them but I think you can always use another asian bookmaker which is better rates...as sobet or maybe ibcbet
here you'll find useful information about ibcbet (bet-ibc.com).Is a good website and has all the system explained very clear