The synchronous rubber belt is made of three materials: chloroprene rubber, fiberglass cord and elastic nylon cloth, the rubber synchronous driving band is a special kind of rubber driving belt to transmit the mechanical driving force. It transfers the driving force by its gearing with the gear wheel, gathering the characters of the gear wheel transmission, chain transmission and belt transmission. Rubber synchronous driving band transmission had the following advantages. It ensures a slip-free transmission between driving and driven wheels. The transmission speed ratio can reach 10 and the transmission speed, 40m/s The transmission power can range from several watts to a hundred or so watts. Simple transmission mechanism, light weighted and lubrification not needed. Large initial tensile force not needed and the spindle load is small. Less noise while running. Easy for maintenance and replacement with new one. So it is widely used in the automobiles chemical fibre, needlework spinning eqripments, and cigarette making machines, printing machined, office equipments, cimmunication equipments, food staff machines, small household electrical appliances, mining, metal-lurgyand steel machinery, medical equipments, chemical machines, light industrial machines and various precision machine tools and instruments, etc.