Language
GB 9074.23 - 1988
JIS B 1129 - 2004
GB 9074.22 - 1988
GB /T 9074.18 (S3) - 2002
GB /T 9074.18 (S2) - 1988
NF E 25-523 - 1999
GB /T 9074.20 - 1988
JIS B 1129 - 1999