GB/T 2424.23-1990 Basic environmental test procedures for electric and electronic products Guidance for water test

GB/T 2423.38-2005 Environmental testing for electric and electronic products—Part 2:Test methods—Test R:Water test method and guidance

GB/T 2423.38-1990 Basic environmental test procedures for electric and electronic products Test R:Water test method GB/T 2423.38-2005 Environmental testing for electric and electronic products—Part 2:Test methods—Test R:Water test method and guidance GB/T 2423.38-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Test R:Water test method and guidance GB/T 2423.38-2021 Environmental testing—Part 2:Test methods—Test R:Water test method and guidance GB/T 5170.20-1990 Inspection methods for basic parameters of environmental testing equipments for electric and electronic products—Water testing equipments GB/T 5170.20-2005 Inspection methods for basic parameters of environmental testing equipments for electric and electronic products—Water testing equipments GB/T 5170.20-2022 Inspection methods for environmental testing equipments—Part 20:Water testing equipments GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code)