What is the standard of high and low temperature experiment

1. High temperature test
1.2 Concept of high temperature test: In
this test, the test piece is in high temperature air, but not exposed to direct sunlight. The high temperature test is aimed at the situation of storing or using products indoors or in confined spaces or close to heat sources such as engines during high temperature seasons. This test is performed only when the solar radiation test cannot test the effect of high temperature. The purpose of the high temperature test is to test the performance of storage or use in a high temperature environment. The purpose of the high temperature test is to determine the suitability of military and civilian equipment for storage and operation under normal temperature conditions.
1.2 Reference standards for high temperature test:
GB/T 2423.2, IEC 60068-2-2, EIA-364-17
2. Low temperature test
2.1 Low temperature test concept:
This test is suitable for test pieces that are likely to be used in a low temperature environment during the life cycle . The purpose of the low temperature test is to check whether the test piece can be stored, manipulated and controlled in a long-term low temperature environment. The purpose of the low temperature test is to determine the suitability of military and civilian equipment for storage and operation under low temperature conditions.
2.2 Reference standards for low temperature test:
GB/T 2423.1, IEC 60068-2-1, EIA-364-59