Phenolic plastic is one of the oldest thermosetting plastics. It has been formally produced in the United Kingdom and the United States in the early part of this century (1906), and is used to manufacture daily necessities and cast sand molds.

It is a dark brown liquid formed by polycondensation of phenol and formaldehyde under the action of a catalyst, and then dehydrated, cooled, and crushed into a powdery resin. Adding a wood powder, a phenolic plastic powder (bakelite powder), available To press (mold) into various shapes of products.

Phenolic resin is abbreviated as PF. Over the past few decades, due to continuous research and improvement, many reforms have been carried out in raw materials, fillers, processes, modification, etc., and they are still in mass production and use within the Zhuang realm, and are still the main varieties of thermosetting plastics.