Phenolic resins are among the oldest of plastics and were the first to be commercially exploited. They are used principally in reinforced thermoset molding materials. Combined with organic and inorganic fibers and fillers, the phenolics provide dimensionally stable compounds with excellent moldability. It is also classified in order to their uses and action are given below ; phenolic resins unmodified powder, phenolic resins modified powder, phenolic resins resole, phenolic resins solid.