... equipment of Coal-bed methane 2.The country's most advanced technology 3.ISO9001 1.The main structureDown hole equipment:Sensor, Frequency ... valve, motor flat cable, cable guard, power cable, tubing. Surface equipment: CBM dedicated wellhead, cable junction box, water tank, smart ... can save 15%-50% power.(8)The down hole sensor is easy to install. The accuracy of sensor can reach 5‰ that can provide3 ...