1, natural car inner tube 7Mpa 8Mpa 10Mpa 2, size;175/185-13,600/650-14,1200-20 etc 4,soft enough high quality long life 1,We are a professional car inner tube and flap manufacturer in qindao china .7mpa 8mpa 10mpa ,with the high quality,competitve price.2,The detailed information is as below; Elongation: 350% 400% 450%natural tubeweight400/450-120.75kg450/500-120.85kg450/500-140.9kg450/500-15 ...