High Temperature Flexible Air Duct, Air Condition Duct, Insulation Air Duct manufacturer / supplier in China, offering Premium AC Insulation Hose Air Conditioning Flexible Air Duct 4"-59", Industrial PVC Flexible Air Hose - Corrosion Resistant, Fire Retardant, -15° C to 80° C, Aircraft-Grade PCA Ducting: Durable, Fire-Resistant Air Supply Hoses 8"-14" Standard and so on.