Language
GB /T 8 - 2021
GB 8 - 1988
GB 8 - 1976
CNS 3135 - 1981
JIS B 1182 - 1995
UNI 6050 (A) - 1967
UNI 5729 - 1965
BS 7419 - 1991
CNS 4699 - 1982
CNS 3134 - 1981
UNI 6050 (C) - 1967
CNS 3136 - 1981
CNS 3137 - 1981
CNS 4422 - 1981
CNS 4423 - 1981
JIS E 1107 - 2008
CNS 4249 - 1980
CNS 4250 - 1980
GOST 21249 (-1) - 1996