QINGDAO SIDOYA MANUFACTURE AND TRADE CO.,LTD are located in Zhangjialou Industrial park, Jiaonan city, Qingdao, China. Qingdao Sidoya Manufacture & Trade Co., is a leading manufacturer being specialized in motorcycle tire and inner tubes, including natural rubber and butyl rubber.We have imported Hi-tech production line, new technology and testing equipments, obtained the ISO9001:2008, SGS, E-Mark, DOT quality management system certification, Our products have been exported to more than 60 countries and regions in Latin America, Southeast Asia, the middle east, Africa and so on.Welcome to domestic and foreign guest to visit our factory, negotiate business, sincere cooperation, win-win future.We can supply the following size:2.25-14,2.25-16,2.25-17,2.25-19,2.50-16,2.50-17,2.50-18,2.75-10,2.75-14,2.75-17,2.75-18,2.75-21,3.00-18,3.00-12,3.00-14,3.00-16,3.00-17,3.00-18,3.00-19,3.00-21,3.25-16,3.25-18,3.50-8,3.50-10,3.50-12,3.50-16/17/18,4.00-8,4.00-10,4.00-12,4.10-18,4.50-10/12/16,90/90-18,130/60-12,110/90-16,120/70-12，4.50-18 and son on.