RE:RE:World Economic Forum (Davos) on Graphene...You claimed that graphene would be too expensive to be put into concrete. I showed you several articles that claimed that the loading would be small enough that I could be used in concrete... and i showed an article that was from this year that claimed it would add 5% to the cost. You are just rambling now, evidence showed you sold out 2019 and have been on a bear crusade ever since