bicycle tube dongge brand bicycle tube Specifications Bicycle inner tube manufacturer 1.High quality, low prices 2.Full range size with different valve , EV, AV.. 3.Honest and credit Our advantage: 1.We have a factory of bicycle inner tube 2.Currently our modle euipment and tube blending machine, ect are most advanced here. 3.All raw material of inner tube are good quality. ( 1) Variety size & tire pattern ( 2) High Abrasion Resistance Tread, Strong tire frame ensure safety, Excellent mileage performance ( 3) Advanced tread design ( 4) CCC, ISO9001 Certification ( 5) Premium quality with competitive price