We are a professional butyl and natural inner tubes manufacture, our products has the high quality and competitive price. 1) Material: Natural Inner Tube2) Brand name: CHANGTONG3) Performance: Good gas tightness, high chemical stability, excellent wearing resistance .4) Tensile strength: 8MPa,10MPa,12MPa,14.7MPa or as per your requirement to produce.5) Elongation at break: more than 500%6) Joint ...