how is the sale different from ipo? even after the sale you are still left with 95% of the coins. that's a bit of worry.
The difference is that we have a running product. You invest partly in what already exists. NHZ has been traded freely on the market already.
In an IPO you do not see the product.. it is just words and promises. Also it has not been traded. Investors get their funds on launch. I hope you understand it better now.
If you have any more questions just ask. I suggest that you google IPO though.