Products: 1. Heavy engineering parts( drum , gear housing ect.), material: qt500, weight: 5~200kg; 2. Hydrualic parts( tube, valve , valve cover , cross/tee, cylinder, pump head and so on ), weight:2~30kg; 3.Auto parts(arm triangle, steering knuckle , suspension arm, etc.) material: qt450-10, weight: 2~30kg; 4.Compressor parts ( cylinder, air inlet block, air outlet block, flange ect.), material: ht250.