From thermosetting plastics, alkyds and melamine resins are better than phenolic resins. Phenolic and amino resins are another group of PMC resins. In composite materials, epoxy, polyester or phenolic resins are common. Modified tung oil and phenolic resins are often used. RCC was a laminated composite material made from carbon fibres impregnated with a phenolic resin. They are substitutes of epoxy, phenolic and bismaleimide resins. Phytochemicals found in hawthorn include tannins, flavonoids, oligomeric proanthocyanidins, and phenolic acids. Commercially charred oaks are rich in phenolic compounds. This heat shield was composed of phenolic formaldehyde resin. Tannins are congeners found in wine in the presence of phenolic compounds. It increases VirA protein sensitivity to phenolic compounds. Chlorogenic acids belong to a group of compounds known as phenolic acids, which are antioxidants. G-3 is a material made of glass fiber and phenolic resin. Good perry pears should have higher concentrations of tannins, acids, and other phenolic compounds. Another substrate material is cotton paper impregnated with phenolic resin, often tan or brown.