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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB 30721-2014 |
Minimum allowable values of the energy efficiency and energy efficiency grades for water-source（ground-source）heat pumps 水(地)源热泵机组能效限定值及能效等级 |
China National Standards source（ground |
 English PDF |
| GB/T 19409-2013 |
water-source（ground-source） heat pumps 水（地）源热泵机组 |
China National Standards source（ground |
English PDF |
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