Wei, a central air-purifying efficacy testing a) anion concentration: 30cm export at 200,000 / cm3; air anion concentration tester. b) air-conditioning outlet respirable particulate matter PM10: ≤ 0.08mg / m3; laser dust tester. c) the total number of bacteria ≤ 500 cfu / m3; total plate exposure sedimentation d) fungi ≤ 500 cfu / m3; plate exposure sedimentation e) β- hemolytic streptococcus and other pathogenic microorganisms may not be detected; blood nutrient agar culture Assay f) increase the amount of ozone ≤ 0.10 mg / m3; portable ozone detector. 7. purification device maintenance a) Safety static power, does not affect the normal operation of air conditioning and other equipment; b) cleaning, maintenance: When you need cleaning, first turn off the power, remove the purifiers were central air purifier disinfection module , direct wash water purification disinfection central air conditioning production, after cleaning, dry for 15-30 minutes, put back into place, the first open fan for 10 minutes, then turn the air purifier. c) cleaning intervals depending on the environment and other factors, usually 1-2 months. Dongguan City Environmental Technology R & D produced a light hydrogen ions purification devices, nanophotonic purification equipment, ultraviolet light catalytic purifier. . Generating positive and negative ions in the body, the process of high-energy ions, high-frequency discharge produces instant high-energy, open some harmful gas molecules TVOC chemical bonds, in particular the removal of air pollutants, can make it even in a very short period of time completely decomposed. Semiconductor photocatalytic purification. Wei, a duct air sterilization purification devices Description:? A detection central air purifier sterilizer prices in the sparsely populated rural valley Bama longevity, air anion concentrations up to 20,000 / cm, is 100 times the city's top ten traffic fortress . People living in such a high concentration of negative ions environment cleaning and disinfection of central air-conditioning wholesale, can stimulate the body's independent vitality, improve immunity, it is not easy to get sick, health and longevity. Generating energetic ions can quickly destroy bacteria, viruses, microorganisms. Reach electronic purification equipment sterilization efficacy. 4, light hydrogen ions sterilization. Pre-charged dust is the use of extremely uneven field, forming a corona discharge under a large number of electrons and positive ions contained in the electric field gradient effects, dust removal. Some hundred elderly life would not have eaten the drug, has not played a needle, that life did not been ill, by what? It is because the immunity gained in negative environments and independent vitality. 2, electrostatic air purification sterilization dust.