Customers who buy rigs here are rarely buyback stakes.<br>Drill pipe is not a consumable piece, can be used for a long time, not a few wells will be damaged. It's not like a drill. Hard rock conditions are particularly prone to damage.<br>Last April, a customer in my here to buy a drilling rig, with the use of air compressor, drill pipe vibration is very large, until now, has not replaced the drill pipe. Only a few consumables have been purchased.
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