... . SG-3: Films, raincoat, industry packing, artificial leather, hose and shoe-making material, etc.2. SG-5: Rigid plate, gramophone ... record, value and welding rod, PVC pipes, PVC windows, doors ,etc.3. SG-8: Good hardness and high strength, mainly used ... for tubes and pipes. Quality Index:ItemsSG-3SG-5SG-8Viscosity ...