series of 17-99F(L), 17-99F(H), 17-99 (L), 17-99(H), 18-99(L), 18-99(H), 19-99(L), 22-99(L), 19-88, PVA (Polyvinyl Alcohol) grade 2499.TDS and typical value as following: ITEMSTANDARDTEST RESULTALCOHOLYSIS %(mol/mol)≥99.099.6VISCOSITY mPa.s57-7364VOLATILES %7.03.8ASH % ≤0.70.5pH5-76.5HENAN KINGWAY CHEMICALS CO.,LTD. PVA (Polyvinyl Alcohol)