2016JB/T 12974-2016 General rules for glass filters for photography
1999JB/T 8260.2-1999 General specification for photographic glass filters
0000 JB/T 8260.2-1995
JB/T 12974-2016 General rules for glass filters for photography has been changed from JB/T 8260.2-1999 General specification for photographic glass filters.