Cartridges sold filled with propylene glycol for electronic cigarettes; Cartridges sold filled with chemical flavorings in liquid form for electronic cigarettes; Electric cigarettes; Electronic cigarette atomizers sold empty; Electronic cigarette liquid (e-liquid) comprised of flavorings in liquid form, other than essential oils, used to refill electronic cigarette cartridges; Electronic cigarette liquid (e-liquid) comprised of propylene glycol; Electronic cigarette liquid (e-liquid) comprised of vegetable glycerin; Electronic cigarettes; Electronic cigarettes for use as an alternative to traditional cigarettes; Electronic devices for the inhalation of nicotine-containing aerosols; Oral vaporizers for smoking purposes; Liquid nicotine solutions for use in electronic cigarettes