DB12/T 444.2-2011 Operating procedures for cleaning and disinfection of centralized air-conditioning and ventilation systems in public places Part 2: Disinfection (English Version)
Tianjin Provincial Standard of the People's Republic of China
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DB12/T 444.2-2011
DB12/T 444.2-2011 history
2011DB12/T 444.2-2011 Operating procedures for cleaning and disinfection of centralized air-conditioning and ventilation systems in public places Part 2: Disinfection