In recent years, due to frequent attacks in public places around the world, the security measures of large-scale activities have been escalated.Application: School hotel use X-RAY security machine requirements:

With the increasing social contradictions, the Public Security Bureau, the Procuratorate, the courts, the judiciary, the prisons, the drug rehabilitation centers, the government compound and other vital departments, easily lead to criminal attacks, frequent v...

In recent years, due to frequent attacks in public places around the world, the security measures of large-scale activities have been escalated.

Subway, city rail and other urban rail transit due to space closed, passenger traffic, terrorist attacks are more likely to cause catastrophic consequences, in the event of a security accident, the consequences could be disastrous.

Terrorism has become an important factor affecting world peace and development and a common enemy of all mankind. At present, the violent terrorist incidents against China are prone to frequent occurrence, posing

In recent years, the express logistics industry caused harm frequent event is not poor, in November 2013, Qingdao \"killer express\" tragedy caused one death and nine injuries, and exposure to toxic chemicals has been identified methyl