... Suspension 2-4 axles,single point suspension and cantilever bogie system all the time.1,Huangjing Machine manufacture Co.,LTD was ... of semi trailer axles assembly,providing all kinds of suspension system and other trailer parts.2, We have automatic stamping machine ... ,Supply various camshafts for trucks, semi-trailer parts.2,produce Brake drum, Brake shoe and other spare parts.3,BPW standard. Trailer ...