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 Room is in electromagnetic compatibility, electromagnetic radiation protection professional research unit technology. Since coming sixties, this room from labor protection, environmental protection carried out two major areas of various types of scientific research, technology development, applied research and basic research in areas such as theory involves. Beijing Municipal Science and Technology Progress Achievement Award, four machine Ministry of Science and Technology Progress Award achievement, a number of major national science and technology award. The room in the long-term research practice of lead glass, and gradually establish a set of advanced field testing system, equipped with advanced measuring instruments and test conditions, labor protection, environmental protection areas in the formation of two electromagnetic radiation Environmental Protection Research and Assessment Center. The room in the suppression of electromagnetic compatibility and protection experts Zhao Yufeng, under the guidance of Professor Yu Yanhua zf2 lead glass, lead glass tissue preparation of color, the official publication of the 15 sets of professional books from publishers; internal distribution of a large number of technical information; bear professional cadre of Labor and Personnel Department, Urban and Rural Construction, Ministry of Health, the Ministry of the four planes, and other sectors of the National Federation of lecture classes task. Hose type explosion wave valve hose type valve is a new wave explosion-proof equipment developed in the 1980s, which is based on a flexible hose made of rubber material as the main valve explosion wave valve. Products with KJH said ventilation rate from 900m3 / h -22600m3 / h can be used. Closed valve is installed in the ventilation duct flexible opening and closing of a closed device. Normal ventilation to protect the open, closed airtight isolation can do. It can be divided into two kinds of manual and electric. Auto exhaust valves, exhaust valves explosion overpressure basement wartime machinery into the wind usually lead glass, overpressure exhaust ventilation mode. Auto exhaust valve is a device for overpressure ventilation exhaust. Explosion wave overpressure exhaust valve can be mounted directly on the wall in the monitoring, both to protect wartime overpressure ventilation, but also the ability to have proof waves. Glass doors lead | lead glass | Shield protection provided by the Changqing District Shield Radiation Protection Equipment Factory. Changqing District Shield Radiation Protection Equipment Factory (www.jdfsfh.com/)(www.jdfsfh.com) strong, credible, in Jinan, Shandong security, protective products processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Golden Shield protection and you hand into the brilliant, for a better future!