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CoinZest exchange was founded in South Korea in 2018, maintaining deposit and withdrawal of fiat currency, Korean Won. At the point, the company’s website is down and Twitter media has not been updated since October, 2019.
BitMarket had been known as a centralized cryptocurrency exchange. It was launched in Poland in 2014. As of now, its website is offline. 
Vinex supports 50+ cryptocurrencies for trading, among them are the most well-know such as Bitcoin, Ethereum, Litecoin, Tether, etc. Vinex is registered in British Virgin Islands.