G Pen Elite VaporizerG Pen Elite Vaporizer by Grenco Science A compact and efficient conduction vaporizer, the G Pen Elite Vaporizer from Grenco Science features one of the largest ovens on the portable vape market! The G Pen Elite Vaporizer is the newest portable vaporizer from Grenco Science. And a perfect fusion of form and function. It is a compact, sleek and portable conduction vape that boasts a huge heating chamber made out of 100% ceramic. The 360 degree heating