They have high withdrawal commission;
0.001 for BTC, 0.007 for ETH, 20 USD for USDT, the equivalent amount of 8.4 USD for ERC-20 tokens and the equivalent amount of 3 USD for QRC-20.
They claim all these fees goto tx but recommended transaction fee for bitcoin or ETH is way lower than this one right now.
But paying higher fees on withdrawal might not affect you as you can save lot on trading fee. I have also heard about this exchange but haven't tried them till now.