GB/T 9978.3 - 2008 standard is the third part of the fire resistance test method of building components, mainly around the test method and test data application annotation Development. It explains the specific operation method of fire resistance test of building components in detail, analyzes the key points of each process, and explains the analysis and application of the data obtained from the test, and guides how to evaluate the fire resistance performance of components based on the data. The standard provides guidelines for relevant personnel in the construction industry to correctly conduct tests and accurately interpret the data, which helps to improve the standardization and scientificity of fire resistance performance testing of building components and ensure building fire safety.