As I understand it there was more than one "vaping" device invented many years ahead of Ruyan at any time mass manufactured an e-cigarette, essentially the most well-known one remaining the one particular within the patent pic down below from Herbert Gilbert. Coyote628 mentioned: It's a mix of the juice https://knoxxxseq.bluxeblog.com/67149608/an-unbiased-view-of-can-you-buy-vape-juice-online-in-massachusetts