XZB.XZB was established in 2002 as a high-tech enterprise specializing in the R&D and manufacturing of critical precision components for automotive engines and transmissions. The company has deep expertise in precision cold forging technology. Its main products include core engine valve train components such as valve retainers, valve spring seats, hydraulic lifters, mechanical lifters, and roller rocker arms, as well as various transmission components. Renowned for their high precision and reliability, these products are widely used in the powertrain systems of both traditional fuel vehicles and new energy vehicles. As a leading domestic supplier of precision cold-forged automotive components, XZB is committed to providing high-performance component solutions for global automotive OEMs.