Unsaturated resin (UPR) is widely used and my country is the world’s largest producer.

unsaturated resin (upr) refers to a polymer compound containing unsaturated double bonds generated by the polycondensation reaction of dibasic acid and dihydric alcohol. unsaturated resin has the characteristics of corrosion resistance, heat resistance, oil resistance, etc., and is widely used in architectural decoration, shipbuilding, wind power generation, coatings, automobile manufacturing and other fields. there are…