include PH,PJ,PK,PL,PM It has advantages of both v-belt and flat-belt.It can be used in cars,ships,airplanes, sartorius,textile, machine tool,tobacco,petromedical,food,electric tool,packing,appliance machine,mine,engine plants of mechanical transmission.TYPERib sectionThicknessAngel of RibPH1.6340PJ2.34440PK3.56640PL4.71040PM9.41740 fan belt