This standard specifies the position and size of optical sound tracks on 16 mm motion picture negatives used for printing 16 mm distribution prints. This standard applies to the recording of optical soundtracks from 16 mm film negatives.
JB/T 9413-2014 history
2014JB/T 9413-2014 16 mm negative photographic sound record on motion-picture film.Position and dimensions
1999JB/T 9413-1999 Sound track of optical sound negative on 16mm, 32/16mm motion-picture - Position and dimensions