High Temperature Flexible Air Duct, Air Condition Duct, Insulation Air Duct manufacturer / supplier in China, offering Industrial PVC Flexible Hose - Tear-Resistant, Acid Proof Ventilation Duct (100-1500mm), Fire Retardant (FR) PCA Flexible Duct for Airport Ventilation, High Temp 120º C, 355*355-6mz PCA Duct Aircraft Ground Air Conditioning Duct Pre-Conditioned Insulated Air Hose and so on.