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This SAE Recommended Practice defines the information required to repair the various types of plastics found on modern light-duty highway vehicles. Information is included for the repair and refinishing of most flexible, semi-flexible, and rigid plastic body parts, both interior and exterior. Repair information is described for all commonly used plastics including polyurethanes, polycarbonate blends, modified polypropylenes, polyethylenes, nylons, sheet-molded compounds (SMC), and fiber-reinforced plastics (FRP). Repairs can be made to these types of plastics using two-part (2K) repair adhesives, plastic welding, and other materials available from body shop suppliers. When a new type of plastic is being introduced to the market through a new vehicle program, specific repair and refinishing procedures should be provided, following the format in this document.