This industry comprises establishments primarily engaged in (1) manufacturing optical and magnetic media, such as blank audio tape, blank video tape, and blank diskettes and/or (2) mass duplicating (i.e., making copies) audio, video, software, and other data on magnetic, optical, and similar media.

Cross-References. Establishments primarily engaged in--

Designing, developing, and publishing prepackaged software--are classified in Industry 51121, Software Publishers; and

Audio, motion picture and/or video production and/or distribution--are classified in Subsector 512, Motion Picture and Sound Recording Industries.