Language
JIS A 5540 - 2008
JIS B 2809 (F) - 2018
GB /T 547 (B) - 1994
JIS B 2809 (MS) - 2018
JIS B 2809 (MR) - 2018
GB 825 - 1988
GB /T 547 (A) - 1994
GB /T 27696 - 2011
BS 4278 - 1984
YJT 17031
YJT 17022
IS 2361 - 2002
IS 4190 - 1984
DIN 582 - 1971
JIS B 1168 - 1975