GB/T 778.4-2018
Meters for cold potable water and hot water—Part 4:Non-metrological requirements not covered in GB/T 778.1 饮用冷水水表和热水水表 第4部分:GB/T 778.1中未包含的非计量要求 |
JJF 1434-2013
Examination Specification for China metrological Certificate. Heat Meters 热量表(热能表)制造计量器具许可考核必备条件 |
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