Language
GB /T 12 - 2013
ISO 8677 - 1986
GB 13 - 1976
GB /T 15 - 1988
GB /T 13 - 1988
GB /T 794 (B) - 2021
GB /T 15 - 2013
GB /T 13 - 2013
GB 15 - 1976
JIS B 1171 (Attached Table 1) - 1996