The volume of Catex.io is real, is this exchange based in China giving you a voucher? The exchange was born only a year ago, they have a CATT token (2 billion) which currently costs very little $ 0.000482 ..... could it be an interesting investment?
a few months ago I bought some CATT tokens, I saw this exchange was good it's just that they were less popular. therefore their token prices are very cheap. but Catex still has potential, most importantly they must be observant in choosing tokens / coins that they will list.
I put my hopes in exchange.