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Flexible duct for class B flame retardant PVC with wear-resistant plastic strips wrapped high carbon spring steel is refined, soft cloth, high strength and tear resistance to acid, corrosion resistance, cold-resistant, heat-resisting, waterproof, fire retardant.
Environmental protection products is non-toxic, no smell, no dust, no fiber. Seamless tube, with no air leakage, wear-resistant, low wind resistance, compressive strength, etc