Model BJ-300 Crawler Spider Crane (3T-class, 2700kg self-weight): Features Plug-and-Play Modularity (20+ attachments for diverse needs)! 10.5m max radius, 10.8m lift height, 6-section boom (3.1m-9.2m, 20sec extension, customizable). Changchai dual power (diesel + motor, -5℃~40℃ operable), 8L tank, 274g/kW-h fuel use. 220mm crawlers, 25 climbing, 360 slewing, hydraulic drive (0-2.5km/h). Optional remote control/basket/fly jib, low noise (81.5dBA). Ideal for construction, factory maintenance. Modular & versatile—top for multi-scene lifting!