Assertion: plastic bumper | /r/HasProperty | the process
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text: By the way, prior to 1995, plastic bumpers were made of polyurethane plastic - PU or RIM (which stands for Reaction Injection Molding, the process used to injection-mold polyurethane plastic) - until it was phased out for economic reasons and TPO (thermoplastic polyolefin) plastic became the standard.