GB/T 4857.13-2005 belongs to the basic test standard for transporting Encasement parts, which is aimed at low-pressure test methods. It is designed to simulate low-pressure transportation environments such as high altitudes and evaluate the adaptability of Encasement parts and their contents. The standard details low-pressure test equipment, such as low-pressure test chambers, etc. The test steps are clear, covering Encasement preparation, low-pressure condition setting, test duration and result observation. Through this test, it can help enterprises optimize Encasement design, ensure that the product is not damaged during low-pressure transportation, ensure product mass and transportation safety, and help the goods smoothly complete the transportation process in special environments.