All of our products are manufactured according to national standard :GB/T1703-1997with natural rubber and butyl rubber.We spare no effort in getting betterquality ,best service and competitive prices for our customers.With our advanced technology and equipments,we can manufacture more than 20kinds of tubes and tyres.All of our products enjoy great popularity in both domesticand overceas market:U.S.,JAPAN,ENGLAND,South America and so on.