A Material of Communications - Audio-Visual stuff
Different companies or organizations use different material for communications. The basic concept is the use of audio and visual data to communicate effectively and make it easy for the audience to understand. Different companies might be using CDs, DVDs, etc. for this. For different organizations, the purposes for making such stuff differ on the basis of their needs and goals. For example, some firms, instead of training their employees by hiring people just give the new employees, manuals and media products to get trained.
Competition between the organizations: