Binance is currently one of the biggest and most popular cryptocurrency exchanges. Originally coming from Hong Kong, the company has recently moved its headquarters to Malta. Back at the beginning of its path the company had an ICO and gathered 15 mln USD. Participants got Binance Coin (BNB) which could be used to trade cryptocurrencies and pay for a fee on Binance exchange.
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.
BBX is a Centralized cryptocurrency exchange based on Malta. The exchange was launched in 2018. Its reported volume is about 15-20 mln. $ per trade. BBX has 5 available trading pairs and 6 coins.
BBX doesn't have Fiat deposits option. The exchange does not accept any other deposit method than cryptocurrencies. Margin trading option is not available on the exchange.