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the x-ray machine can be used to check a variety of items. can the x-ray machine also check out drugs? so what is the price of x-ray security scree...
as a frontier security inspection machine guarding the frontier, it bears a heavy responsibility. people put the heavy task of defending the frontier ...
what is a security gate? security door also refers to metal detection door, which is specially used to detect whether metal articles are hidden on peo...
it is said that the prison vehicle access inspection system is a security inspection equipment without radiation. is it really like this? it can be fa...
drugs can be said to be something that every country is very afraid of. it can damage the effective strength of a country, resulting in the separation...
the hotel is a place with a large number of people. especially in the peak tourist season such as holidays, the hotel's people flow will increase grea...