gb7778
gb7778, Total:3 items.
The international standard classification for "gb7778" includes: Refrigerants and antifreezes , Refrigerating technology .
The Chinese standard classification for "gb7778" includes: General organic chemicals , Refrigeration equipment .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 7778-2008 Number designation and safety classification of refrigerants
- GB/T 7778-2001 Number designation and safety classification of refrigerants
中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会
- GB/T 7778-2017 Number designation and safety classification of refrigerants
