Testnet WEMIX (TWEMIX), the native coin of Testnet, is required to proceed with development on Testnet. Testnet faucet provides a free distribution of TWEMIX, which is unavailable on the exchange.
Testnet faucet is a web-based service that provides free tokens to testnet users. With TWEMIX, users can experiment with WEMIX3.0's features on the mainnet without directly using WEMIX as a gas fee.