Shandong TYEN machine manufacture co.,ltd is a professional factory for complete range of axle & suspension of semi-trailer parts (trailer),Website:http://www.tyen-axle.com, as one of the quality-oriented organization, we engaged in R&D and manufacturing of auto parts for 30 years in trailer parts industries, TYEN introducing various advanced facilities, including Axle hot rolling, Computer numerical control machine tools, Horizontal boring machine, Induction hardening machine, Automatic welding, Dynamic balancing machine, Shot blasting machine, automatic dryer&electrophoretic coating line and full automatic assembly line. Having maintained an effective quality management system, our well-equipped facilities and excellent quality control throughout all stages of production enables us to makes them suitable for the wide range of applications and guarantee customer satisfaction. It also brings solid hardware support and high quality guaranty for axle and suspension production in volume.