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See Chinese contents: GB 30978-2014 GB 30978-2014: Minimum allowable values of the energy efficiency and energy efficiency grades for water dispensers
This Standard specifies energy efficiency grades, minimum allowable values of energy efficiency, evaluating values of energy conservation for household and similar water dispensers as well as test methods and inspection rules. This Standard is applicable to hot-cold water dispensers of which rated voltage does not exceed 250V.
