need glass deep scratch restoration tips.

Yeah I mean I should clarify, with laminated glass depending on the depth of the scratch if you were to buff it out, it could cause a spot of distortion (depending on how much and how "deep" you buff and polish, but I'd say it'd have to be deep). With tempered glass I'd say good luck. In my experience it's been very tough to get tempered glass cleaned up. But I know that you could use a glass clay to clean up the glass and pick up a lot of grime and other debris from the surface. I use a soft compound at work to get light scratches and scuffs from glass. SOMACA makes the product its a "rare earth mineral" compound, it looks like a fine pinkish powder. I use a firm buffing wheel on my drill and go to town. Little water for lubrication and it's good to go. Works pretty well. Another place to check out some other products including glass is Griot's Garage. I've got the glass clay and other sprays from them.

With the rubbing compounds I get them through work, but I would imagine that you could find the stuff online or at a local glass shop.

Sorry for the ultra long post, hope it makes sense... worn out from work.