This standard specifies the units and symbols of the commonly used quantities of heating, ventilating and air-conditioning purification equipment, which are suitable for the commonly used quantities of technical performance in this field.
| Status | Active |
|---|---|
| CCS | P04 | ICS | 91.140.30 |
| Release Date | 2023-05-23 00:00:00 | Implementation Date | 2023-12-01 00:00:00 |