General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 28424-2012
Scope
This standard specifies the main graphic symbols and legends of the equipment used in the traffic television monitoring system. This standard applies to the design and construction of traffic television monitoring systems, and other industries can also refer to it.
GB/T 28424-2012 Referenced Document
GA/T 74-2000 Symbols for use in diagrams of security and alarm system