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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.
ChainX is a centralized exchange based in Korea, launched in March 2019. It provides investors with access to KRW fiat/cryptos pairs, charging zero deposit fees. 
OTCBTC is one of the largest Asian OTC (over-the-counter) cryptocurrency platforms. It also maintains the Exchange Market.