The transfer of tokens on own Tron's platform was announced on June 21. Here is a list of exchanges that supports transfering:
Bit-Z
Bibox
Bittrex
Binance
Bixin
Bitfinex
Bitpie
Bithumb
Coinnest
Coinrail
DragonEx
Liqui
Gate.io
RightBTC
UpBit
ZebPay
BITKOP