GB/T 5338.2 - 2023 Focus Series 1 Thermal Insulation Container. The standard specifies its technical requirements in detail, covering the structural design of the box, the performance of thermal insulation materials, etc., to ensure good thermal insulation effect. In the test method, the test process and indicators such as airtightness, thermal insulation performance and refrigeration and heating are clarified, and the performance of the container is inspected by simulating the actual transportation conditions. This provides a basis for the production, inspection and use of thermal insulation containers, helps to ensure the quality of refrigerated goods during transportation, and improves the Reliability of cold chain logistics transportation.