1.High space utilization;

-Mounted on the wall or column, does not occupy the floor space, effective use of upper space

-More working range than the traditional column wall crane

2. Large load capacity

-Steel structure design can carry a large weight

3. Good stability

-Installed on a fixed wall or column, it has good stability.

4.Cost saving

-Save more material cost than door machine

-Can be installed directly on the existing track without additional steel structure.

-Simple construction, greatly shorten the construction period, improve work efficiency