... most advanced technology 3.ISO9001 1.The main structureDown hole equipment:Sensor, Frequency electrical submersible motor, protector, gas-liquid ... flat cable, cable guard, power cable, tubing. Surface equipment: CBM dedicated wellhead, cable junction box, water tank, smart ... & sand production in various well.(6)Main page on LCD: Voltage, Amps, Frequency, Downhole fluid level, Downhole temperature ...