... for flexible ducts 2.We are manufacturer 3.We supply spring steel wire,aluminized PET,aluminium PET foil,PVC,ect Specifications ... : Prompt 5.weight: As the buyer's requests6.We supply spring steel wire,aluminized PET,aluminium PET foil,PVC,ect Wire ... -12701270-1470—12.01030-12701270-1470—13.01030-12201220-1420— Spring steel wire