FAQ > Auto Glass Differences > Aftermarket Auto Glass Manufacturers Knoxville's Finest Auto Glass Installation Center • What is an OEE Manufacturer? Aftermarket auto glass is made by companies that do not contract with any car manufacturers.  In some cases they may not  have the legal right to manufacture the auto glass to the exact same specifications as OEM distributors due to licensing and  copyright laws. OEE Aftermarket glass is significantly cheaper to buy than OEM or dealer glass.  Non OEM parts suppliers are  companies that participate solely in after market products, where the tight quality control requirements of auto manufacturers  may be bypassed. It is said that they typically produce the part by reverse engineering an OEM part to get dimensions.  It is  also said that Non OEM suppliers may not be privy to original equipment specifications for fit, finish and performance.  Safelite is an OEE Aftermarket manufacture.  They are currently owned by Belron a very large company whose roots began in  South Africa and now spread across the world.  Belron trades under 15 different brands including Carglass®, Autoglass® and  now Safelite.  Belron acquired the Safelite Group in 2007 who was at that time one of, if not the main after market or "original  equipment equivalent (OEE)" auto glass manufacturers who produce "OEM equivalent", or "OEE", auto glass in their own  manufacturing facility which is located in Enfield, NC which is ISO-9002 certified to ensure consistently high quality.  According  to them essentially the same type of glass that is installed at the time your vehicle is made and that the only difference  between OEM and OEE is the windshield manufacturer.  Safelite claims that their glass meets or exceeds all federal, industry  and safety standards, and to make sure they engage in some of the most rigorous product testing in the industry.