Longyao Changjian Auto Parts Co.,Ltd is specializes in the production of trailer, semi-trailer axle, and spare parts. The company provides the American and German type semi-trailer axle, high bogie, low bogie, mechanical suspension and air suspension for semi-trailer manufacturers and transportation industry. Longyao Changjian Auto Parts Co.,Ltd has gathered an excellent technical team with a group of professional engineers who have international view. We try to make the technical standard of the products meet requirements of the different clients, meanwhile, we will provide good service for them. With advanced processing technology and testing machine, we improve the dynamic quality, braking quality, anti-deformation and anti-fatigue property and service life. Every one who used our products will satisfied with our good quality and best service.