we are the chief construction machinery export in china and and have been handling various kinds of construction machinery also include parts of machinery for about 16 years. 
The parts of our construction machinery: such as :carrier roller.cut.track shoe
track links assy .track shoe.track roller.boit.nut and so on.types are like these:komatsu.shantui.hitach.cat and so on.Use for:shantui.komatsu.hitach.cat.