My father worked for 3M for 25 years. Custom order tape department in London, Ontario - the headquarters of 3M Canada. I grew up with all their products from video cassettes, audio cassettes, every adhesive tape imaginable, glues, diskettes, waxes & polishes, Scotchbrite pads, Post-it-notes, etc. I even worked there one summer as a student. The factory was spotless - you could eat off the floor. I remember at one time they made 35,000 different products. Just a fantastic company.