PVC white powder industrial grade ,food grade ,medical grade K66-68 ... ;Usage Piping, hard transparent plate. film and sheeting, photograph records.PVC fibers, plastics blowing, electric insulating materials. usage field : 1; construction ... eachtypeSG5gradesuperViscosity,mL/g(K)(gaverage polymerizafion degree)118-107(68-66)(1100-1000)black spot16Density1.4Volatile matter and moisture%0.40Bulk ...