Glycerol Monostearate (GMS) is an internationally recognized non-toxic, harmless and safe food ingredient used in various food processing. In addition, it has a wider range of applications in the plastics industry, mainly used as mold release agents, plasticizers, antistatic additives, anti-shrinkage agents for plastic foam products, and internal lubricants in compound lead salt stabilizers . In the production of PVC pipes and profiles, it is used as an internal lubricant instead of stearic acid, which reduces the surface precipitation of PVC products and acts as a plasticizer. In recent years, it has been well used in the PVC pipe and profile industry.