During more than 10 years,we made good cooperation with installers and resellers of Benz,BMW,Audi,Porsche,Land Rover,etc.With customized features,our units are specially designed for local OEM radios and all units cannot be shipped before pass various test of aging,high and low temp,vibration and drop.Internal strict quality control should be processed for material,accessories and quality inspection.Our staffs including sales, engineers,QA team have over 10-year OEM&ODM experience in car entertainment.