... record, value and welding rod, PVC pipes, PVC windows, do k value 65 PVC Resin powder specificationAverage polymerization drgree1150-1000K Value68 ... -66Viscosity(ml/g)118-107Impunity particle number(piece)≤ 16Surface Density,g/ml ≥ 0.45Volatile(including water)%≤ 0 ...