Electronic cigarettes are mainly composed of four parts: cigarette oil (containing nicotine, flavor, solvent propylene glycol, etc.), heating system, power supply and filter, and aerosols with specific odors are generated by heating atomization for smokers. In a broad sense, e-cigarettes refer to electronic nicotine delivery systems, including electronic cigarettes, hookahs, hookahs and other forms. In a narrow sense, e-cigarettes refer to portable e-cigarettes similar in appearance to cigarettes.
Although e-cigarettes have styles or brands, general e-cigarettes are mainly composed of three parts: a cigarette tube containing nicotine solution, an evaporation device and a battery. The atomizer is powered by a battery rod and can convert the liquid nicotine in the cartridge into mist, so that the user has a feeling similar to smoking when inhaling, and achieves "swallowing clouds and spitting fog". It can even add chocolate, mint and other flavored spices to the pipe according to personal preference.
