inorganic foil-insolent composite air duct

HH-W20 inorganic compound air ductcan be used to in every variety warm air condition air duct, defend row tube etc..With tradition haveinorganic compound air duct more and more economy energy, more environmental protection more safety, more economy, HH-W20 inorganic compound air duct have six price of show the Zhao ratio advantage, market foreground vast.
inorganic foil-insolent composite air duct