BTCC (formely BTCChina) is a Hong-Kong-based company offering bitcoin and litecoin exchanges, a mining pool, payment processing, a wallet, and more.
Founded in June 2011, as BTC China in Shangai, it was China's first bitcoin exchange and ever since then most of its customers were thought to be Chinese.
Bobby Lee, a Stanford computer science graduate and brother of Litecoin's creator Charlie Lee, is CEO of BTCC.
On September 14, 2017 after the China state ban on cryptocurrency exchanges, BTCC announced it was suspending trading as of 30 September 2017.
BTCC plays a significant role in the cryptocurrency ecosystem as its BTC and LTC mining pools are in the top ranking mining pools. As of November 5, 2017, BTCC's pool commands around 7% of bitcoin hash rate.
The fee for BTC mining is -4% and for LTC is 2%.