... : A, The none circular and irregular section of this PVA fibers helps expanding PVA bonding surface ... to acid, can be used in different grade of cement.(3) Dispersive, maintains the material surface smooth ... for packaging.There are some other new types of PVA fibers such as water insoluble PVA fiber, ... PVA fibers, because PVA is soluble in water, emulsion, can be generated and can chelate chemical cross ...