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Coinchange is a cryptocurrency trading service registered in Canada. The platform brands itself as a smart bridge to cryptocurrencies and DeFi investments. Coinchange strives to be a regulated company providing users with a state-of-art security trading environment. KYC procedure on Coinchange is obligatory. The exchange is special because of zero trading fees. 
YunEx is a centralized cryptocurrency exchange that was registered in British Virgin Islands in 2018. It focuses on USDT, ETH and KT markets. 
Ripple China is the Ripple Gateway that was established in 2013 in China. The current status of this service is uncertain. The company’s website is still live.