Yonglitai (L1) has built a full-process service system covering the entire product life from design and R&D manufacturing, testing and verification to after-market maintenance. We are the professional manufacturer of axles, suspensions and spare parts for semi-trailer with more than 60 years producing experiences. The current annual production ability can reach to 300000 pcs axles and 100000 sets of all kinds of suspensions. Our company has obtained the ISO9001, IATF16949 and SGS certification.