QJ 1239.4-1987 Electronic equipment environmental testing conditions and methods: Temperature change test

QJ 1239.1-1987 Environmental Test Conditions and Methods for Electronic Equipment - General Principles QJ 1239.2-1987 Electrical equipment environmental test conditions and methods: High temperature test QJ 1239.3-1987 Environmental testing conditions and methods for electronic devices: Low temperature testing QJ 1239.5-1987 Low-pressure test for electronic equipment environment conditions and methods QJ 1239.7-1987 Electronic equipment environmental testing conditions and methods - Sand and Dust Test QJ 1239.8-1987 Electrical equipment environmental test conditions and methods: Humidity and heat test QJ 1239.9-1987 Electronic equipment environmental testing conditions and methods: Mould test QJ 1239.10-1987 Electrical equipment environmental testing conditions and methods: Salt spray test QJ 1239.11-1987 Electrical equipment environmental test conditions and methods - Vibration test QJ 1239.12-1987 Environmental Test Conditions and Methods for Electronic Equipment - Noise Test QJ 1239.13-1987 Environmental Test Conditions and Methods for Electronic Equipment - Shock Test QJ 1239.14-1987 Electronic equipment environmental testing conditions and methods - Acceleration test