... fan belt,alternator belt, accoring do ISO 9001 guarantee for 80000 km Ribbed V belt introduction: Poly V belt, ... including,PH,PJ,PL belt.It`s no ... ratio,because of tooth of poly v-belt,so it have high transmission power,about ... v-belt.2.Comparing to flat belt it has lower vibration than flat belts.3.Oil and heat resistant and save space.SIZE ...