Co2and Pm Indoor Air Quality Monitoring Iot Sensors .
Indoor and outdoor lightning like LED light, floor lights, floor lights, LED light.
Parts for refrigerator, wash machine, wtr heater, gas oven with factories at china, thermostat, defrost timer, evaporator, door switch, shaded pole motor, others, drain pump, w/m motor, capacitor, solenoid valve, bimetal thermostat, w/m timer.