Our company are mainly engaging in the research & development and manufacture of air purifier, dust collector, water purifier and their accessories. After years' effort and progress, we have accumulated a set of experience about structure design and process design. And also we have mastered the skills of manufacturing these products. The main products of our company are advanced hi-tech products, such as air purifier, oil and gas purifier, plastic wasted gas purifier and plasma organic wasted gas purifier. The products are mainly applied in the commercial air purification area, household air purification area, medical air purification area and also clean room. At the same time, the products are applied in the oil and gas purification project, paint spraying wasted gas purification project, plastic machine wasted gas purification project, setting machine organic wasted gas purification project and machine tool smoke recycling project. Through unremitting efforts of the researchers, we have tackled many key technology difficulties. One of the examples is that the high voltage power supply we manufactured solves many problems, such as fire, short circuit, mistaken protection and high failure rate, when the environment protection equipments are working under special conditions. Our products have reduced the maintenance period and cost of the equipments, and they are safe, reliable and have long life.