U.S. Para Plate Manufactures World-Renowned Vehicle Wash and High Pressure Parts and Accessories. Company Overview Founded in 1972, U.S. Para Plate offers a broad range of highly engineered components used in commercial car wash systems. Virtually every car wash in the United States -- and many around the world -- utilize at least one U.S. Para Plate product. Known for high reliability in critical applications, U.S. Para Plate's products include hydraulic valves and regulators, system timers, and spray gear.