GB/T 2 2271.1 - 2021 is aimed at plastic polyformaldehyde (POM) molding and extrusion materials. It establishes a standardized naming system to clarify the identification method of polyformaldehyde materials with different characteristics. Establish a classification basis, and scientifically classify polyformaldehyde materials according to the chemical composition, physical performance, processing characteristics and other factors of the material. Through this standard, various types of polyformaldehyde products can be clearly distinguished, providing a unified and accurate communication language for production, research and development, procurement and other links, and promoting the rational application and efficient circulation of polyformaldehyde materials in various industries.