As I understand it there was more than one "vaping" device invented decades before Ruyan at any time mass produced an e-cigarette, by far the most famous a person being the just one from the patent pic below from Herbert Gilbert. If you may get absent with SOME PG, you https://judahutppk.therainblog.com/33938314/how-buying-vapes-online-california-can-save-you-time-stress-and-money