According to a report from the CNN on January 13, according to a government official, the U.S. Department of Homeland Security (US DHS) has announced that it will intensify its search for U.S. airports and improve airport security warnings in order to respond. In recent days Al-Qaeda’s magazine describes how to make a home-made bomb. It is reported that the Ministry of Homeland Security had already carried out this action a week ago. After the strengthened transportation safety management measures including passengers passing the airport's normal security check, security personnel will randomly check passengers and baggage at the boarding gate. According to reports, according to official sources, the U.S.’s emphasis on aviation safety is due to the threat of non-metallic explosive devices that can only be detected through a full-body scanner . This detection technology is currently too expensive to use at small airports.
The air-cooled screw low-temperature chiller, with shell-and-tube evaporator and condenser, and fin heat exchangers, works well for R22, R404A, R410A, R134A, R407C, R513A, and other refrigerants. Most applications are for freezing processes in medicine, chemical industry, electronics, food processing, etc. The unit has a cooling capacity range 60kw~340kw with an outlet temperature 5C~-35C.
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