Air Conditioning Maintenance
Air Conditioning Maintenance, Total:4 items.
The international standard classification for "Air Conditioning Maintenance" includes: Telecommunication systems .
The Chinese standard classification for "Air Conditioning Maintenance" includes: Communication equipment in general .
Group Standards of the People's Republic of China
- T/HNNTXH 02-2022 Standard for maintenance of central air conditioning
- T/GDAHVAC 2-2021 Qualification level of central air conditioning maintenance institutions
- T/HNNTXH 01-2022 Qualification level of central air conditioning maintenance institutions
- T/GDAHVAC 1-2021 Standard for maintenance of central air conditioning
