20 元券allowableMinimum12021.6energy¥1720去看看建河图书专营店发布了GB 12021.6-2017 Minimum allowable values of energy effi...17 元券allowableefficieMinimumvalues¥146.20去看看建河图书专营店发布了GB 25502-2017 Minimum allowable values of water efficie...20 元券allowableefficieMinimumvalues¥1720去看看建河图书专营店发布了GB 28378-2019 Minimum allowable values of water efficie...20 元券efficiencyenergyinstantaneousallowable¥1720去看看建河图书专营店发布了GB 20665-2015 Minimum allowable values of energy efficiency and energy efficiency grades for domestic gas instantaneous20 元券allowableMinimumenergyvalues¥1720去看看建河图书专营店发布了GB 29541-2013 Minimum allowable values of the energy ef...22 元券allowableefficieMinimumvalues¥189.20去看看建河图书专营店发布了GB 28377-2019 Minimum allowable values of water efficie...20 元券allowableefficieMinimumvalues¥1720去看看建河图书专营店发布了GB 25501-2019 Minimum allowable values of water efficie...25 元券allowableefficieMinimumvalues¥224.60去看看建河图书专营店发布了GB 30717-2019 Minimum allowable values of water efficie...efficiencywaterallowableshowers¥2400去看看优学图图书专营店发布了GB 28378-2019 Minimum allowable values of water efficiency and water efficiency grades for showersefficiencywatersquattingallowable¥3120去看看优学图图书专营店发布了GB 30717-2019 Minimum allowable values of water efficiency and water efficiency grades for squatting pansefficiencywaterallowableurinals¥2640去看看优学图图书专营店发布了GB 28377-2019 Minimum allowable values of water efficiency and water efficiency grades for urinalswaterefficiencyallowableclosets¥2040去看看优学图图书专营店发布了GB 25502-2017 """Minimum allowable values of water efficiency and water efficiency grades for water closets"""efficiencywaterallowablefaucets¥2400去看看优学图图书专营店发布了GB 25501-2019 Minimum allowable values of water efficiency and water efficiency grades for faucets