1.About factory: Our factory is established in 1986, located in the coastal city - Qingdao of Shandong,china,it is specializes in the production of tyres and inner tubes.Covering an area of 10,000 square meters, and has 800 employees. 2.Motorcycle Inner Tube Size: Main size including 225-17.250-14,300-14,250-17.250-18, 250-19,275-17.275-18, 300-17, 300-18, 350-8,400-8, 350-16, 350-17, 350-18, 325-18, 410-18, 80/90-17,90/90-18, 110/90-16, 130/90-15 etc. 2.Advantage: (1).Quality: We have more than 50 technicians who specialized in researching quality of raw material and developing new products,they have rich experience and practice in motorcycle tire industry,certainly,all of products with CCC,ISO9001,DOT,ECE and SONCAP certificates. (2).Price: We are motorcycle inner tube manufacturer,so our price is more competitive and reasonable. (3).Material: Raw material of our products are butyl or natural rubber,rubber content is 45%,or according to the demand of the customers. (4).Payment Term: In general,our payment term is T/T or L/C. (5).Package: Each motorcycle inner tube is wrapped by nylon bags, paper box, cartons, colorful foil bags,pp bags, or according to customer's requirement. (6).Samples: We can offer free Samples for quality confirm,freight collect. "Competitive price, the best assured quality and timely delivery" is our core strength. Our qualified and experienced professionals make sure that we deliver only the best products to you.