question
ICO start in may 2018., and private ICO start in April 2018. Can you explain what is this mean?
Private sale means they have internal investors so to speak.
Usually they are the big whales that will take advantage of that.
While the main ICO is for public, either small or big time players.
Maybe they can explain more if I haven't satisfied you.

Internal investors isn't the word I would use, I would say private investors. The private sale is the period where we are looking for large investors who are also providing us more than just investment. Our philosophy is that Smart Money is much better than other kinds, and while it's not that we don't want all of the money, we're lucky to have the backing and the experience to look for value and treat investors as more than ATMs.
The public sale is for everyone and will have a very reasonable minimum investment because we really do want the community to be our partners and that means taking your input seriously and also taking your contributions seriously!