... suspension and cantilever bogie system all the time.1,Huangjing Machine manufacture Co.,LTD was found in 2002 and is ... other trailer parts.2, We have automatic stamping machine,multi-stage stamping machine,Welding robot,advanced painting equipment,enable to new ... bearing for fixing.3.HJ axle bearing position is used the grinder machine to machine to keep the concentricity. After process, to limit ...