Mygrant Glass Co in Chula Vista is a branch of the largest independent wholesale auto glass distributor in the United States, headquartered in Hayward, California, and operating since 1926. The Main Street warehouse stocks both OEM and aftermarket windshields sourced from over 30 factories worldwide, supplying dealership service bays including Toyota Chula Vista with factory-matched glass for current and legacy model years. Now a third-generation operation, Mygrant Glass expanded from a single location in 1979 to more than 70 distribution centers nationwide, making it the dominant wholesale source for auto glass installers across every U.S. market. The company operates as a wholesale-only distributor and does not own or run retail glass shops, ensuring that installer customers never compete against their own supplier. Salvage-title rebuilders and recyclers such as Import Auto Wrecking source replacement glass through the same wholesale channel, accessing Mygrant's VIN-lookup tool to match exact part numbers for discontinued and hard-to-find vehicle models. Inventory depth covers ADAS-compatible windshields with integrated rain sensors, heated wiper zones, and head-up-display reflective coatings calibrated to OEM optical specifications.