... FS, ZD, ZR, ZAS, ZB, RHD, RHX, RPP, SL, etc.2) Good quality3) Markets: Southeast Asia, East Europe, the ... and Canada1) Materials: rubber, reinforced fiber, cloth2) Used in machinery and equipment for sewing, food processing, offices and ... or pulley. When working, teeth and trough are in harmony and one movement will cause transmission of teeth, ... FS, ZD, ZR, ZAS, ZB, RHD, RHX, RPP, SL, etc. Timing Belt