Keeping up with times and portraying a technologically up to date image is very important for any company which is serious about it's business. For example did you know that you could now have an electronic brochure which is the size of a visiting card ?
This is the most effective way to do the marketing for your industrial product. If you want to do a Target Marketing then it is the Best way to do. In the CD - Presentation you can put lot of Animation, Moving Pictures, Images, voice-over, music, Video with theme base Creativity and with out any boundaries of Bandwidth, Internet, Speed etc.
Furthermore, sometimes you may wish not to display some exclusive products on your website due to fear of copying them by your competitors.