This standard specifies the terms and terms of quality and size of caravan trailers defined in GB/T 3730.1, and gives definitions. This standard does not involve the measurement methods, units, precision requirements, and quality and size classes of terms.
GB/T 22552-2008 Referenced Document
GB/T 3730.1 Terms and definitions of motor vehicles,trailers and combination vehicle— Part 1:Types*, 2022-12-30 Update