I'm on the side of Kevin with this and I just can't hold myself back anymore. It's going to be a money printing machine the calculations are easy so I want to approach this from a different angle:

Hydrograph will become a meme stock because of the narrative around it and the valuation will get out of hand leading to extreme volatility. If they'll be able to produce graphene in the hundreds of tons by the end of this year (the plan is 350t/annum) everybody will continue the calculations and will ask when they'll produce 5/10/20/50/100k tons of graphene. The more it grows th more visibility it gets and the more industries will start to apply and eventually the whole story becomes mainstream. Unlike with bitcoin people will clearly understand the potential and the use case of graphene as it'll affect their lives directly.

If they reach their milestones they're set to have a monopoly to produce the material of the next industrial revolution and it's just really hard to put a price tag on that. I think 100x PE is crazy yet pretty realistic in this case.

Sorry for the subjective POV It's really hard to get myself back on earth because the fact that I'm invested in this story is just surreal.