Laun would be consider a construction grade plywood. Not good for cabinets. Here's a link to a good introduction to cabinet grade ply.
-Highland Hardwoods: Hardwood Flooring, Retail Hardwood Lumber, Wholesale Hardwood Lumber. Click on " Other Products" and the "Plywood". It will tell you pretty much everything you need to know. This is just one company there are many many more. A lot of these companies sale mail order or you may find a company the carries cabinet grade plys right in your area.