Update: It seems like the CoinMex exchange shut down, possibly exit scammed.
CoinMex provides access to BTC, ETH, USDT and NEO markets. The company was incorporated under the legislation of the Republic of Seychelles in 2018 and is affiliated with NEWEX Technology Co. Ltd. CoinMex is focused on the Chinese market.
Paybis is a platform where you can buy, exchange, or sell any cryptocurrencies or electronic currencies. The system aims to provide readily available currency exchange services for everyone. The service supports 9 cryptocurrencies, among them, are Bitcoin, Ethereum, Litecoin, XRP, Bitcoin Cash, Stellar, Binance Coin, NEO, and TRON. The service is focused on a narrow circle of countries: USA, Canada, Ukraine, Russia, Great Britain, Germany, Belarus, France, India, and Australia.