The design of the first generation of e-cigarette completely imitates the shape of ordinary real cigarette in appearance. The cigarette cartridge is yellow and the cigarette body is white. This generation of e-cigarettes has been popular for several years, because its appearance is similar to real cigarettes, and it is accepted by customers in the first sense. However, with the increasing use of the first generation of e-cigarettes, especially foreign customers, many shortcomings of the first generation of e-cigarettes are found in the use process, mainly in the atomizer. The atomizer of the first generation e-cigarette is easy to burn out. In addition, when replacing the cartridge, it is easy to damage the tip of the atomizer. Over time, it will be completely worn out, resulting in no smoke from the atomizer.

The second-generation e-cigarette is slightly longer than the first-generation e-cigarette, and its diameter is generally 9.25 mm. The most important feature is that the atomizer has been improved. There is a protective cover outside the atomizer, and the smoke cartridge is inserted into the atomizer, while the first-generation e-cigarette is inserted into the smoke cartridge. The two are just the opposite. The most remarkable feature of the second generation electronic cigarette is the combination of smoke bomb and atomizer.

The third generation e-cigarette uses disposable nebulizer cartridge, which is equivalent to disposable nebulizer. It solves the previous problems, greatly improves the quality, and changes the appearance and raw materials.