GJB 150.1a-2009 is a general requirement standard for "Laboratory environmental test methods for military equipment". This standard specifies general requirements for laboratory environmental testing such as atmospheric conditions, water purity, tolerance of test conditions, test temperature Stability, etc. It includes test preparation, Baseline data, information requirements, test process, result analysis, and monitoring. This standard was implemented on August 1, 2009, replacing the GJB 150.1-1986, ensuring that the test methods of military equipment in the laboratory environment are more standardized and complete.