45-100t trailer suspension assembly ISO9001:2000/TS16949 certified Over 10 automatic production lines Full aftersales service 45t 60t 75t 80t 100t trailer suspension assembly produced by our company QINGDAO JIN LI BO TRADE CO., LTD., has reasonable structure,good braking quality,high-intensity,big rigidity,long life,as well as strong bearing capacity,and also passed the national authoritative ...