... hotels,office buildings,department stores bands,posts and telecomunications,power industries,public entertainment places or dwelling ... monxide(CO),hydrogen cyanide(HCN),Poison smoke and fog.c.Mist permeability coefficient5%,d.Inhalation resistance800pa,Exhalation resistance300pa ... nearby,no flammable,explosive and corrosive materials nearby,well ventilated,keep away from rain and moisture corrosion.c. ...