One of the most important repair is the frame/ inner structure of the car. Not all vehicles have the same frame structures, for example, pick up trucks sit on an heavy duty bolted on steel frame, four door sedans are considered uni-body which means the frame is constructed in multiple separate pieces. Some cars have High Strength Steel (HSS) others are more complex and meet different standards of repairs. Aluminum frames which is used in manufactures such as BMW and Jaguar the sets specific guidelines on how to repair the car, those guidelines are only granted to those that are CERTIFIED to reconstruct the manufacturers cars, if guidelines are not followed for the repairs the vehicle will NEVER function properly. Royal Auto Body proudly displays their certifications of true craftsmanship.