The car bumper is a safety device that absorbs and slows down the external impact and protects the front and rear of the body. Many years ago, the front and rear bumpers of automobiles were stamped with steel plates into channel steel, riveted or welded to the frame rails, and there was a large gap with the body, which looked very unsightly. With the development of the automobile industry and the large-scale application of engineering plastics in the automobile industry, automobile bumpers, as an important safety device, have also moved on the road of innovation. In addition to maintaining the original protection function, the front and rear bumpers of today's cars must also pursue harmony and unity with the body shape, and pursue their own lightweight. The front and rear bumpers of a car are made of plastic, and they are called plastic bumpers. Generally, the plastic bumper of a car is composed of three parts: an outer panel, a cushioning material and a beam. The outer plate and cushioning material are made of plastic, and the cross beam is stamped with a cold-rolled sheet to form a U-shaped groove; the outer plate and cushioning material are attached to the cross beam.

The plastic bumper is composed of three parts: an outer panel, a cushioning material and a beam. The outer plate and buffer material are made of plastic, and the cross beam is punched with a cold-rolled sheet with a thickness of about 1.5 mm to form a U-shaped groove; the outer plate and buffer material are attached to the cross beam, and the cross beam and the frame longitudinal beam can be connected by screws at any time Disassemble it. The plastic used in this plastic bumper is generally made of two types of materials: polyester and polypropylene, and is made by injection molding.

On June 26, 2013, the National Automotive Products Industry Federation, the National Automotive Standardization Technical Committee Body Accessories Sub-Committee and Guangdong Dongjian Group jointly issued China's "Auto Protection Bar" industry standard. This standard was drafted under the leadership of Guangdong Dongjian Group, and a number of domestic scientific research institutions and professional institutions participated in the demonstration, and passed the approval of the Ministry of Industry and Information Technology. It is reported that the official announcement of China's "Automotive Barrier" industry standard marks a "zero" breakthrough in the automotive barrier industry standard and fills the gap in domestic standards. The standard will be formally implemented nationwide on September 1, 2013, which has aroused greater attention from industry manufacturers and sellers.