... 1.apply to large rig equipments 2.supply parts for national oil varco for more than 3 years. 3.OEM available ... and samples;Equipment: laser cutting machine, welding machine, bore machinestamping machine, punching machine, bending machine with the manufacturing ability of bending ... line is involved in pig machine,elevator,high speed train,steam turbine machine,construction structure,machining frame,truck ...