Digital mode conversion box CSJH-S1, digital mode conversion box CSJH-S5, digital mode conversion box CSJH-S9, digital mode conversion box DJ-A, digital mode conversion box TQG-3G, digital mode conversion box TQG3G, motor train harmonious number locomotive plate key switch series, electric train harmonious number locomotive instrument series, train harmonious number locomotive speed table series, subway special instrument series, train harmonious number model. Conversion box series, EMU harmony valve special pressure gauge series, Shanghai Rui road instrument and Meter Co., Ltd. The state indicator lamp series of the motor train harmonious number. The series of the front lighting bulb of the motor train harmonious number, the power ballast of the headlamp of the locomotive and the electric locomotive, the DC contactor series of the electric control voltage regulator of the electric locomotive, and the series of the voltage and current sensor of the temperature sensor of the locomotive's harmonious number locomotive pressure sensor.

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