Admittedly, you won't find much justification for that in the fins. A lot of it is based on recent events and projections for revenue/growth. I'd check out the recent news/PRs here:

https://www.otcmarkets.com/stock/PGUS/news

Maybe also check out the company blog here:

http://www.progreenus.com/company-blog.html

I say this fully skeptical of the fact that you really want to be informed, mind, but I'm holding out hope that you will like what is going on here.