Hopefully someone can help me get a quick education on the materials use to make the dry erase or whiteboards you see in offices and schools

What is the proper name of the sheet material(s) used in making these?
Is there more than one type/brand of sheet material and which ones are better?
What sizes (width/length and thickness) does it come in)?
Who makes/distributes/sells the material?
Any ideas on cost, i.e. a 4x8 sheet?
Any special properties/concerns in working with (cutting, sawing, etc) the material?

Also, I have seen a wallpaper type material that is applied to whole walls (floor to ceiling) for the same dry erase purpose. Any information on this product would also be helpful.

Many thanks.

Ben