Gentex Corp. engages in the design, development, and manufacture and supply of digital vision, connected car, dimmable glass, and fire protection products, Its revenue is derived from the production and sales of automotive products in the United States, Germany, and Japan. Its products include automatic-dimming rearview mirrors, dimmable aircraft windows, and commercial smoke alarms and signaling devices. Read More The company was founded by Fred Bauer in 1974 and is headquartered in Zeeland, MI.