South Korean tobacco manufacturer KT&G began selling its latest e-cigarette, Lil Vapor, Monday, adding to growing competition in the e-cigarette market following the Friday launch of US-based Juul Labs’ vape pen. According to KT&G, Lil Vapor has upgraded the liquid-type e-cigarette by applying “puff signal” technology, which allows the device to tell users how many puffs are left by vibratin...
