GOST 31856-2012 Gas-fired instantaneous water heaters for the production of domestic hot water, fitted with atmospheric burners. General technical requirements and test methods
GOST ISO 3745-2014 Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi-anechoic rooms
GOST 33869-2016 history
2016GOST 33869-2016 Energy efficiency. Water heaters and hot water storage tanks. Environmental security and ecological safety guaranteed design