What's the plastic casing behind the car?
The front and rear bumpers are made of plastic, known as plastic bumpers. The plastic bumper of a general automobile is composed of three parts: an outer plate, a buffer material and a cross beam. Wherein, the outer plate and the buffering material are made of plastic, and the cross beam is punched into a U groove by a cold rolled sheet; the outer plate and the buffering material are attached to the cross beam.
The rear bumper is a safety device that absorbs the outside impact and protects the front and rear parts of the car body.