1.PVC resin powder suspension grade 2.K-Value range K59-K72 ... is used in the insulation material of PVC tube, panel, hard transparent sheet, foil, disc, PVC monofilament, blow molding product, appliance insulation ... shoe-making material, etc.SG-5: Rigid plate, gramophone record, value and welding rod, PVC pipes, PVC windows, doors ,etc.SG-7: Good ...