The anion comb depends on whether there is a built-in anion generator, followed by the quality of the anion generator. Most of the cheapest negative ion generating equipment will not release negative ions even if it is used for up to three months, because it needs high voltage to generate negative ions. At present, in order to reduce the cost, many manufacturers in the market use inferior negative ion generators (one is strong high voltage, the other is inferior resin can), and the generators are easy to be broken down under the action of high voltage. Moreover, because ordinary carbon fiber is used as the release tip, it will produce a small amount of ozone, positive ions and other derivatives, which will have a certain impact on the body after long-term use.

Not all negative ion generating devices are of poor quality. The negative ion generator filled with high-quality resin or replaced with piezoelectric ceramics can avoid the breakdown problem, while fullerene, a super-conductive catalyst material, can avoid the ozone at the tip of the negative ion release. The generation of positive ions and other derivatives has a service life of up to 200,000 hours. If it is combined with the ecological negative ion chip technology, it can produce ecological small-particle negative ions equivalent to nature, which can easily penetrate the blood-brain barrier of human body.