Automobile chassis armor the scientific name is automobile chassis bull antirust sound insulation coating (" UNDERCOATING "primer), a high-tech adhesion of the rubber asphalt coating. It is non-toxic, high cover rate, high adhesion, spraying in vehicle chassis, the wheel hub, oil tank, the car around the board, luggage expose place, after drying quickly form a layer of elastic protection layer firm, can prevent flyrocks and gravel collision, avoid moisture, acid rain, salt for vehicle chassis metal erosion, prevent  automobile chassis  rust and corrosion, protect the owner's safety, while the elastic protection layer that can reduce driving road and tire noise when, improve the owner's accelerating comfort.