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See Chinese contents: GB/T 23828-2023 GB/T 23828-2023: Light-emitting diode changeable message signs of motorway
This document specifies the classification, composition and model, technical requirements, test methods, inspection rules, as well as signs, packaging, transportation and storage for light-emitting diode (LED) changeable message signs of motorway. This document applies to the production, use and inspection for light-emitting diode changeable message signs of motorway.
