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See Chinese contents: GB/T 17729-2023 GB/T 17729-2023: Hygienic standard and detect methods for the air quality inside interurban bus
This document specifies the limits and detection methods for volatile organic compounds and carbonyl compound in new interurban buses, and the limits and detection methods for the main components of the air in in-service interurban buses. This document is applicable to Class B and Class III buses in Category-M2, Category-M3. Other types of buses may take this as a reference.
