Open e-cigarettes use an open oil filling tank, which supports consumers to DIY operations and self-fuel injection to achieve recycling, but this seems very convenient, very cost-saving practices, and easy to pose a threat to their own health.
Because most users are easy to buy cigarette oil produced by informal manufacturers, the composition is uncontrollable, not only the quality of cigarette oil is not up to standard, but also in the face of the freedom of adjustable cigarette oil, users are prone to the problem of random addition, resulting in harm to the body.
Therefore, relatively speaking, closed electronic cigarette (disposable electronic cigarette) products are safer. Although it seems to limit the user's hands-on ability, it improves the product experience and safety.
