1: Semiconductor, photocatalysis, electrostatic field multiple roles, so sterile, dust, clean the effect is more reliable, thorough. Third, the combination of places: There are installed central air conditioning in place are suitable, together for: office buildings, hospitals, food shop, beverage shop, airport, library building, science museums, waiting (car) room, gymnasium, fitness facilities, shopping malls, conference room, office space, computer room and other fields 1, combined wide, according to purify the air volume, can be customized. The products use ultraviolet light air nitrogen atoms in the semiconductor electric field emitted excitation nanometer TiO2. 4, a variety of specifications, size and flexible, can be installed in different positions fan coil air sterilizer can be customized to meet customer needs in detail. Wei-environment center air purification system features: And air conditioning linkage. Air volume based on customer requirements, can be flexibly combined. 3, for a variety of models supporting the use of air conditioning. A plurality of units can be combined into a tailor-made to deal with the amount of wind. 5, automatic operation, constant high pressure. Shape having a small size, lightweight, simple installation features, without changing the structure of air-conditioning ventilation system. As long as the center of the installation of air conditioning duct on the product on the air conditioning system will be able to conduct a comprehensive sterilization, disinfection, purification. 4: The product has a low air resistance characteristics of the existing air-conditioning ventilation system running a small effect. Photocatalytic Oxidation Reaction Mechanism ultraviolet photocatalytic reaction is very complicated. Conventional UV germicidal lamp lighting circuit when plugged in, because ultraviolet light disinfection high-impedance state, the power generated by the ballast and filament glow discharge fan coil air disinfection process, the discharge of heat to the bimetal thermal deformation switched to the contact, the circuit began to the current two fluorescent lamp cathode heating fan coil air disinfection production, a large number of electron emission, increase in mercury vapor lamps, fluorescent tube filaments to complete the warm-up. Cathode heating, a large number of electron emission, increase in mercury vapor lamps, fluorescent tube circuit to complete the current starts to two bimetal thermal deformation of the fluorescent lamp is turned on contact, traditional UV germicidal lamp lighting circuit when turned on After the power supply, because ultraviolet light disinfection high-impedance state, the power supply through the ballast and filament glow discharge, heat discharge so. Filament preheating. Hole has a strong ability of electrons entrapped after hit the water molecules, the water molecules are taken away electrons to form hydroxyl (-OH) fan coil air sterilizer price, hydroxy strong chemical activity, can destroy organics chemical bonds, to the desert of the decomposition of organic pollutants purposes. Some nanomaterials such as TiO2 composite photocatalyst powder, after ultraviolet irradiation, will produce 'electron - hole' right.