... Crane use to fixed in some area to lifting up/down materials. Lifting capacity: 3- 20t height: 6-120m ... sized structure of steel ,and installing and tearing- down machine equipment and mainly used for Construction Company, diggings and load ... , marine, mine, large-scale installation project, match lifting equipment and other hoist or traction engineering.Specifications: ModelJM2JM3JM5Line pull capacity ...