Qingdao Longmaoda Tech Co.,Ltd is a trading and manufacturer combination,we have nearly 20 years of experience in the production of castings,forgings,machining parts,various locomotive components and electromechanical components.We have our own R&D team, a large number of experienced engineers and professional technicians,advance equipment and strict quality management system.We offer you the best price excellent products with high quality and high efficient services,both ODM and OEM are available.Welcome to domestic and foreign customers to make a field inspection of our factory.