Modern cars on the belt requirement is: Life of 250000-300000 km; temperature -35-150%, instantaneous temperature can reach 175%; oil of �� CR; 150 �� step down up to 3000 h-life, but also in enhancing oil not at the expense of its low-temperature performance, with teeth dynamic storage modulus �� 1.4 MPa. To achieve such a high, and only the use of peroxide curing HNBR / zinc methacrylate (ZMA) complexes and aramid fiber reinforced composite materials.

Mainland companies HNBR / ZMA and aramid fiber with manufacturing HSN-POWER life HNBR timing belt use in the gasoline engine, their life expectancy has more than 240,000 km, and has been close to the "engine with life".

A cloth belt back

Automotive belt because of the manufacturing process constraints, with the back are generally pure rubber, as it is used in the automotive belt back at the same time lead to other components such as pumps and tension institutions, in particular the DI diesel engines. Requires a lot of tension, so wear on the back, very large, pure rubber unable to meet the requirement. If the cause is back with the cloth, can be greatly enhanced with the back wearability. If the mainland's "Conti Diesel Runner" is such a belt structure.