Consist of multiple layers of aluminum foil laminated with copolymer
film, the wall bound by coated highly tensile spring steel wire, unique
mechanical construction locks together by self-hardingadhensives.            
Specially designed for the minimum friction of loss in both straight
runs and elbows.            

Highly compressible structure for easy storage, packing and transportation  

Application:            
For office, laboratory, hotel, hospital, restaurant, industrial and
household use in cooling and heating apparatus, air-conditioning
andventilation.