The SEER SFL-CBD30 is an autonomous pallet truck with a 3-ton ultra-high load capacity, measuring 1,720 by 960 by 2,090 mm and weighing 650 kg with a 205±5 mm standard lift height, 600 mm load center distance, and 1,360 mm minimum turning radius. Forks measure 1,220 by 173 by 60 mm with 600 or 680 mm outer widths. AI pallet recognition supports multiple specifications, colors, film wrapping, and damaged pallets with adaptive multi-angle high-accuracy forking for stable pick-up and drop-off. Three navigation methods of SLAM, reflector, and NFL achieve ±10 mm and ±1-degree positioning accuracy. A 51.2 V 106 Ah battery provides up to 8 hours endurance with tool-free 3-minute battery replacement. A 40 m detection range with 3D obstacle avoidance laser, safety edge sensor, distance sensor, and hardware self-inspection creates 4-layer safety protection, with braking distance under 30 cm at 1 m/s and under 50 cm at 1.5 m/s. Driving speed reaches 1.5 m/s full load and 1.66 m/s no load with under 5 percent slope, 10 mm step, and 30 mm gap passability. Dual spring shock absorbers on driving wheels and enhanced hydraulic cylinders come standard. Right-angle stacking aisle widths are 1,970, 1,891, and 1,881 mm plus 200 mm depending on pallet configuration. Options include 3D obstacle avoidance, pallet recognition, cage stack, high shelf pallet recognition, pallet stack, and HMI display. Targets industrial logistics and warehouse heavy pallet handling.