China's existing standard notation and foreign counting method, the main difference is that: 1. The domestic only measure new filter efficiency, foreign send dust measuring efficiency in different st ...

Environmental protection department of the People's Republic of China The male to No. 7, 2012 To carry out the environmental protection law of the People's Republic of China "and the law of the Peo ...

This standard stimulates the high efficiency air filters and the ultra high efficiency air filter rules of classification, technical requirements, quality inspection and product logo, packaging, trans ...

Management specification of air cleaning technique in hospitals The ministry of health of the People's Republic of China to send cloth Before the speech This standard according to GB/T1.1- ...