... heat energy meters,air-warm valve.2.HVAC and fire works. 3. Water equipment,auto-control watersystem,industrial mini ... automatic control 4.Irrigation equipment,drinking water equipment,solar water heaters,washing machines,water heaters,industrial humidifier. 5.Replacing ... , actuator valve, electric operated valve 2-way mini electric ball solenoid valve auto shut off for aotomatic water control system