Binance dont need KYC and enable trading between altcoins and withdrawing up to 2 bitcoin per day. More than 2 bitcoin require KYC.
indeed most exchangers actually don't ask for KYC if only for trading, besides binance I give an example of IDAX,
https://www.idax.proThis exchanger requests KYC when you will Withdraw, and even then if the amount of your Bitcoin withdrawals is in large amounts.