Model BJ-800 8T Crawler Spider Crane (8700kg self-weight): Intuitive One-Touch Operation – user-friendly interface needs minimal training for quick productivity! Boasts 18m max radius, 21m lift height, 5-section 5m boom (5.5m-21m, 54sec extension, customizable). 12m/min hook speed, Yunnei 490 diesel (electric start, -5℃~40℃, 8L tank). 350mm crawlers, dual-speed hydraulic drive (0-2.5km/h), 25 climbing, 360 slewing. Optional remote control/torque controller/basket. Ideal for construction, heavy lifting – reliable, all-terrain, wholesale direct from factory!