GBL is a substitute for the more poisonous solvent dimethylformamide that was Utilized in the sooner stages of the event of the perovskite photo voltaic mobile.not nice, very easy to OD and i know alot of people who have. i KOed in a very park at the time, The good thing is i could JUST force myself into a taxi and sleep for ages.GBL isn't Ener… Read More