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Cat.Ex exchange platform was founded in mid-2018. Its headquarters is based in China. Providing its local token holders with dividends on a daily basis, Cat.Ex utilizes transaction mining in order to ensure an efficient profit-sharing. 
SimpleSwap is an easy cryptocurrency exchange that supports over 1500 currencies. The service is free from sign-up and provides two exchange types: floating and fixed rate. SimpleSwap has made the cryptocurrency exchange process simple, safe, and comfortable.
Huobi is a cryptocurrency exchange founded in China in 2013. Currently, Huobi is based in Singapore because this country has friendlier cryptocurrency regulations. The company is registered in  Seychelles. Before leaving China due to a cryptocurrency ban, the exchange was responsible for 90% of Bitcoin trading volume in this country. Now Huobi is an international platform with offices located in Singapore, Hong Kong, the United States, Japan, and Korea. In China, the company provides blockchain consulting services. Huobi has sub-exchanges: Huobi Korea, Huobi US, etc. Huobi Global is the biggest Huobi exchange. In November 2019 Huobi Global had to shut down all the accounts belonging to the US customers due to strict cryptocurrency regulations of the USA.