The Electric Rotary Crane Hook Block is a component that incorporates an electrically-powered rotating mechanism and a hook for lifting and moving heavy loads. 

The rotating shaft is driven by the electric motor, causing the hook to rotate and allowing heavy loads to be lifted, suspended, and lowered with ease.  

This device commonly used for lifting heavy machinery, steel structures, bridges, and other large objects. The rotating function of the hook allows for more flexible and efficient operation and improving work efficiency.

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