Understanding of key parameters of cleanroom controlled environment for Good manufacturing practices for veterinary (revised in 2020)

Combined with the author’s working experience in the revision of Good manufacturing practices for veterinary (revised in 2020) and the chief editor of Design standard for clean workshop of veterinary pharmaceutical industry, expounds the indicator determination, control measures and the latest concept changes of the key parameters of the controlled environment in cleanrooms. Mainly focuses on the changes and understanding points of cleanliness of dynamic state, indoor temperature and humidity, air pattern, unidirectional airflow velocity, air supply volume, cleanliness recovery characteristics and differential pressure etc.