Polyvinyl Alcohol,pva polyvinyl alcohol Grades: 1799,2299,2499,2699 hydrolysis : 99% min viscosity:20-60cps Polyvinyl Alcohol, ... SizeAdesive ProcessingArchitectural CoatingEmulsification Stabilizer and DispersantAcetal Derivatives Producing Grades: 1799,2299,2499,2699: hydrolysis : 99% min, viscosity:20-60cps1788,2288,2488 ...