... for trucks,semi-trailers.Produce brake parts similar like brake drum,brake lining,brake air chamber,slack adjust, adjuster arm,kingpin ... 18T semi trailer axles assemble,24T-36T single point suspension(bogie) assembly,2-4 axles mechanical suspension assembly,28T cantilever bogie and ... various camshafts for trucks, semi-trailer parts.2,produce Brake drum, Brake shoe and other spare parts.3,BPW standard. ...