BTCC is one of the biggest chinese Bitcoin exchanges.
Today they released Android Play and Apple iStore approved wallet app called Mobi.
With Mobi you can tip people on twitter with it and exchange BTC into fiat currencies worldwide and even gold or silver. Thay also have optional Visa debit card which you can link with the account. Mobi uses its own blockchain + BTC blockchain when you want to send BTC peer to peer.
BTCC Volume and Stats