Swapping USDC for USDT on the TRON network can be done quickly and conveniently with Sunswap. Sunswap is a decentralized exchange (DEX) that runs on the TRON network and allows users to swap tokens without having to use a centralized exchange. Sunswap also has no fees for swapping USDC to USDT, making it an ideal choice for those looking to make the swap quickly and with minimal cost. Additionally, Binance and Gate.io are two other popular exchanges that also offer USDC to USDT swaps with no fees. Both exchanges are well-known and have been used by many people for a variety of different cryptocurrency trades.