How to Sell 0x Protocol (ZRX) for Ethereum (ETH) in Portugal

To sell 0x Protocol for Ethereum in Portugal, first, find a cryptocurrency exchange that supports the ZRX/ETH trading pair. Create an account, verify your identity, and deposit your ZRX into your exchange wallet. Locate the ZRX/ETH pair on the trading platform and place a sell order to exchange your 0x Protocol for Ethereum. If the ZRX/ETH pair is unavailable, you can first sell 0x Protocol for a stablecoin like Tether (USDT) or a fiat currency such as the Euro, then trade that for Ethereum. Be mindful of potential exchange fees, which vary by platform and can affect the total amount you receive.