1, do not have the natural smoke conditions stairwell pressure delivery outlet size, fire elevator room or shared room. 2, the use of natural smoke stairwell, it does not have the front room of natural smoke. 3, closed refuge floors. In all three cases the virtual set pressurized air supply system. Its end is positive outlet Here is the style of products and drawings. Seams clean room HEPA demand means the outlet flange and ceiling panels between the implementation of the gasket disposal, remember that there are cracks in the need for strict local disposal well. HEPA avoid damage or breakage may not conduct coating apparatus outlet duct means necessary severe connected, open end with plastic film and tape reinforcement dense wind disposal. Tangshan positive outlet | pressure delivery outlet | Rich ventilation provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Plumper ventilation equipment into the brilliant and you work for a better future!