SUNYEH

electric damper actuators for ventilating; electric control device for use in damper operations; electric regulator device for use in damper operations; electrical control mechanism use in conjunction with dampers for ventilating; electric control mechanisms for dampers for ventilating; electric regulator mechanisms for dampers for ventilating; electric damper actuators, namely, control devices used in ventilating ducts to discharge the smoke for fire-fighting system; electric actuators used in dampers for ventilating; electric damper actuators for use in ventilation ducts; electronic controls, namely, control devices used in ventilating, air conditioning, refrigeration, energy, heating, and fire-fighting systems; Electric control devices used in electronic dampers, for air ducts to regulate the flow of air; electrical control devices used in dampers to regulate the flow of air or liquid