Ozone purification technology: Ozone is now very mature and widely recognized. It has strong disinfection and sterilization functions, and can effectively remove various odors and decoration pollution. However, ozone can also be harmful to the human body. Ozone itself is non-toxic, mainly because it has strong oxidizing properties and can stimulate the human mucosa. Therefore, it is best not to have personnel present when using ozone, So it is commonly used for industrial waste gas treatment.

UV disinfection: UV can achieve the purpose of sterilization and disinfection. But it has high radiation intensity and can cause damage to the skin and eyes. Exposure to ultraviolet disinfection lamps can cause skin changes such as redness, swelling, pain, and peeling. Long term irradiation may cause skin cancer and develop skin tumors. It can cause conjunctivitis and keratitis in the eyes, causing redness, swelling, pain, and tearing. Prolonged use may lead to cataracts. So we cannot coexist with humans.

Negative ion purification technology: Negative ions are generated by the combination of oxygen molecules in negatively charged air and tiny water molecules. A general negative ion generator uses its negative high pressure to ionize the air, producing a large number of negative ions that neutralize a small amount of naturally occurring positive ions in the natural air, producing a certain amount of energy release, effectively causing changes in the surrounding bacterial structure or energy conversion in an instant, leading to bacterial death and achieving sterilization. The amount of positive ions naturally present in the natural air is relatively small, so its bactericidal effect is very small. So, the sterilization effect of negative ion generators is not as good as that of positive and negative ion generators (plasma generators).

Plasma purification technology: The main working principle of a plasma generator is to increase the low voltage to positive and negative high voltage through a boost circuit, ionizing the positive and negative high voltage air (mainly oxygen), producing a large number of positive and negative ions. The number of negative ions is greater than the number of positive ions (the number of negative ions is approximately 1.5 times that of positive ions). At the same time, the positive and negative ions generated in the air neutralize the positive and negative charges, generating huge energy release, causing changes in the structure or energy conversion of surrounding bacteria, leading to bacterial death and achieving their bactericidal effect. Due to the greater number of negative ions than positive ions, excess negative ions still float in the air, eliminating smoke, dust, and odors, improving air quality, and promoting human health.