Home / Standards / HG/T 2907-1997 HG/T 2907-1997 Active 照相排版用卷筒胶片尺寸 Standard Type HG ICS N/A CCS N/A Status Active Issue Date 1997-05-23 Implementation 1997-10-01 Centralized Committee 化学工业部 Issuing Authority 化学工业部