... .2. We can assure you of both the price and quality are the best. As a manufacturer, having our own factory ... transportation .The delivery time won’t be long.4. The quality is warranty. The company has through IS9001-2000 International ... , South East Asia, Africa and America. All size are available :Tyre and inner tube :2.25-17 ,2.50-17 ,2 ... -6 ,3.50-4 ,3.00-4 , and so on good quality bicycle inner tubes