Three-in-one integrated reducers combine the motor, electronic control unit (MCU, motor controller), and reducer (gearbox) into a single modular unit, reducing size, weight, and energy loss while improving efficiency. Primarily used in crane operating mechanisms such as gantry cranes and electric hoists, this series of reducers can also be used in transmission mechanisms in various mechanical equipment, including transportation, metallurgy, mining, petroleum, chemical, construction, railways, ports, defense engineering, and the textile industry.