GB/T 2 2271.2 - 2008 focuses on plastic polyformaldehyde (POM) molding and extrusion materials. This part specifies the sample preparation method, covering the operation details under different processes, and clarifies the performance measurement process, including mechanical, thermal and other performance test specifications. Through this standard, it can ensure the preparation of standard samples and accurately determine the performance of POM materials. Reliability data is provided for the application of POM in electronics, automotive and other industries to assist product design, mass control and material selection.