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Bit-Z is a Hong Kong-based cryptocurrency exchange that was launched towards the end of 2016. It is one of the top ten crypto exchanges around the world in terms of the reported trading volume.
TOKOK is a centralized digital cryptocurrency exchange providing USD, BTC and ETH markets for trading. 
XT.com is a centralized cryptocurrency exchange set in 2018 in Hong Kong. Available markets are: BTC, SXC, USDS, XT.