1.Air exchanger core 2.Frame Angle:90 degress 3.Plate distance:4mm ... easy to maintain,and long service life features,etc.2. Module structure,different size of edges and superposed ... transfer stamping, increased the 10% heat transfer area.2. Adopt stamping convex round as air passage support, ... humidity area, especially for no return air occasion.2. Apply to recover energy in room ventilation system.3 ...