In the international standard classification, Qualifiers involves: Character sets and information coding, Information technology (IT) in general, Protection against fire.
Professional Standard - Public Safety Standards, Qualifiers
GA/T 1054.3-2015 Qualifiers for data elements of public security (3)
GA/T 1054.4-2016 Qualifiers for data elements of public security (4)
GA/T 1054.5-2016 Qualifiers for data elements of public security (5)
GA/T 1054.1-2013 Qualifiers for data elements of public security (1)