Dongguan City Environmental Technology Co., a patented technology in its research and development of all kinds of central air purifier: return air purification equipment, pipeline cleaning device, plug-in light hydrogen ion purifier, fan coil cleaner, etc. Features: semiconductor surface hole - electron recombination from photocatalytic reaction mechanism can be seen, when an energy greater than or equal to the band gap of a semiconductor light irradiation, the valence band electrons (e-) is excited transition to the conduction band, while the valence band to produce a hole (h +). To suppress the electron - gap to produce a composite central air conditioning air purification parameters, study a way to control its complex. Hole - electron pairs generated is to give it a potential transition, can use the power-assisted methods to control, to hole - electron separation. Attract charges from the principles of physics, can inhibit the electron transfer. Application of this principle, when in transition while giving it a power, in the opposite direction to migrate central air-conditioning air purification principle, to achieve this breakthrough of principle, the project is focused on solving key technology. Photocatalytic technology 1) Semiconductor technology is catalytic TiO2 or CdS, WO3, ZnO, ZnS, Fe2O3, SnO2 as the typical semiconductor photocatalyst. From having a redox catalytic properties of the semiconductor, optical and electrical work while at the same time, the light irradiation catalyst layer on the semiconductor, electrons are potential can transition to the conduction band, and the role of the gap by the electric force is absorbed, reducing the migration of voids. Optical and electrical separation through several tests hospital central air conditioning air purifiers, verify: electric field plates coated with a semiconductor catalyst central air conditioning air purifiers, vacuum after the electric field is presented in Table loose dust with a vacuum cleaner or an electric field is placed into a neutral solution, 1min remove dust field surface quickly dissolved in the aqueous solution, washed clean; without catalytic coated semiconductor field, the role of static electricity by the mirror, dust firmly attached to the electrical field , it is difficult to clean. Combined optical and electrical separation principle of innovation, break the electrostatic field for many years confused cleaning difficult problem, but also realize the semiconductor surface hole - electron pairs of composite and separation, greatly improves the catalytic effect of the semiconductor. It is evident from the cleaning process, for the treatment and recycling of organic pollutants are potentially effective, technological innovation, promote the development of technological progress and industrial technology, purification of organic pollutants. Central air conditioning air purifier prices, Gansu central air conditioning air purifier, a great production provided by the Dongguan City-an Environmental Technology Limited. Dongguan City Environmental Technology Co., a (www.v-1.com.cn) strong, credible, environmentally friendly products in Dongguan, Guangdong processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead a great environment and you work into the brilliant, for a better future!