... ; 2.pva rolls high water absorbing ability; PVA absorbing water sponge rollsIntegrating R&D, production, sales and service, our Huili Machimery ... of conveyor rollers, conveyor equipments and machinery accessories. The absorbent sponge roll is made of the hydrophilic polymer PVA (polyvinyl alcohol ... questions,please feel free to contact us. PVA water-absorbing sponge rolls