... parts: for air compressor, we can supply air filter, oil filter, oil core, belt and so on. for drilling rig, we ... a best quotation.A, What is the working pressure ( Mpa, Bar, PSI)?B, What is the volume flow ( m3/min, CFM)?3, What is the Power supply ( KW, ... will add to the cost for the consumers; meanwhile, the time cost and the loss caused by returning will far exceed the value of the product itself ...