German style axle.we are a prossional manufacturer semi-trailer fiftting located in Liangshan,Shandong province. Darong German style ... Traffic Mechinery co.,ltd. is a professional manufacturer of semi-trailer fittings located in Liangshan, Shandong province. We untilize the latest ... semi-triailers in the Asian market as well as semi-trailer BPW/American axle assembly,axle tube, the single point ...