#19706
History
Time
Change
2013-07-20 07:40:09+00:00
Created
2013-07-20 07:40:09+00:00
Associated with
GB 12050
2013-07-20 07:40:09+00:00
Associated with
GB 12050-1989
2013-07-20 07:40:09+00:00
Associated with
GB 12050-89
2020-10-10 05:36:47+00:00
Associated with
GB/T 12050
2020-10-10 05:36:47+00:00
Associated with
GB/T 12050-1989