Vaporizer Learning Center
Who is G Pen?
G Pen (more formally known as Grenco Science) is a vape pen manufacturer that has been around since the beginning of the vaping craze. They got their start by focusing...
Who is G Pen?
G Pen (more formally known as Grenco Science) is a vape pen manufacturer that has been around since the beginning of the vaping craze. They got their start by focusing...