As we look back the development history of electronic cigarette clearomizer, there are some representative models in every important step, from the beginning the disposable cartomizer type to the first top clearomizer CE4, then the updated version CE5, CE6, then the tank clearomizers T2, Vivi Nava, 1453 clearomizer, then the bottom coil clearomizer, such as protank, H2, C14 clearomizer, nowadays the sub ohm tanks, such as Nautilus, Atlantis, Subtank etc. The diameter of most models are 14mm to have a good compatibility with eGo 510 thread batteries, but as time goes by, box mods becomes as popular batteries on the market, to fit the box mods, the diameter of new clearomizers are designed bigger with different sizes by factories. In this environment, Justfog launchs the first big size diameter clearomizer Q16 clearomizer, it’s the big size version of Justfog Q14 clearomizer but have a better compatibility with its J-Easy9 battery and other box mods on market.