Electric driven or electro-hydraulic driven With fixed boom, knuckle boom or telescopic boom Luffing by oil cylinder or steel wire rope Slewing angle: 360 degree or less With operation stand or driver cabinet With overload limit, luffing limit, slewing limit, hoisting up or down limit Emergency stop Emergency lowering system Made-to-order or OEM is acceptable emily email:emilyji913 at gmail.com Yahoo:emilyji913 at yahoo.cn skype:emilyji913 msn:emilyji913 at hotmail.com