Dongguan city Qifei electronic technology limited company is an enterprise manufacturing high-tech environmental protection equipment R & D, production, sales as one of the dust filtration system, a series of successful development of the recycling system, dust, metal powder collection system, odor elimination system, toxic gas purification system. With excellent quality, energy saving, high purification rate, using the characteristics of low cost, deeply domestic and foreign customers; the purified air without discharged to the outside, thereby reducing the energy consumption of refrigeration equipment, both to improve air quality and reduce power consumption, more important is to reduce the pollution of the environment and failure, reducing the dust and poison gas bring irreversible harm to employees.