Polyvinyl chloride (PVC) SG5 is a medium molecular weight resin produced by polymerization of vinyl chloride monomers. It has a K-value of about 66-68, which makes it a versatile material suitable for both rigid and flexible products. PVC SG5 has good technological properties, high mechanical strength, chemical resistance and durability. Due to these characteristics, it is widely used in the construction, packaging and electrical industries.