IEO is the best investment have higher profit or ROI, but you have know before which one the best IEO to get much profit before you buy or invest, always choose the best exchange market to buy an IEO coins.
it's true that being a participant from the IEO you can get very high profits but you have to know that these benefits can be obtained when you become a participant from a high-volume exchange place such as a binary exchange place, because if you are a participant in the exchange place other exchanges, there is no guarantee of being able to make a profit.
only IEO on binance exchanges that could give investors profits.they get more than 2x from initial capital when traded in binance exchange.even in bitter could not do the same.only few IEO could give investors profits.maybe only binance and huobi recommended exchanges to participate.