How does the Air Duct Realize the Thermal Insulation?

Everyone engages in HVAC fabric duct system knows that there need to be a layer of rubber and plastic coated on the outside of the iron duct to play a role in heat insulation and prevent the cold air or hot air leaking from the iron duct from having a large temperature difference from theContinue reading “How does the Air Duct Realize the Thermal Insulation?”

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