The QE-type double-trolley double-girder bridge crane is an upgraded version of the QD-type bridge crane, featuring two trolleys instead of one. It can operate with a single hook independently or both hooks simultaneously for lifting loads. This crane series is classified into medium-duty (A5) and heavy-duty (A6) working classes, and can also be custom-designed for light-duty (A1–A3) or extra-heavy-duty (A7–A8) applications if required.

The crane is operated from a cabin, which can be accessed via side, end, or top entry. The cabin offers a wide field of view and is equipped with an integrated control console, allowing flexible operation and comfortable working conditions. Optional features include fans, air conditioning, and overload indicators. A slanted ladder connects the cabin to the top of the crane for convenient operation and maintenance. Custom non-standard designs can also be provided based on user requirements.