The SEER SCB-3000EU is a CE-certified (ISO 3691-4:2023) counterbalance autonomous forklift with a 3-ton ultra-high load capacity and 500 mm load center distance. It measures 3,222 by 1,420 by 2,441 mm (3,000 mm lift) or 3,302 by 1,420 by 2,718 mm (3,500 mm lift) and weighs 4,970 to 5,030 kg with a 1,859 mm minimum turning radius. Forks measure 1,220 by 135 by 45 mm with adjustable width from 450 to 750 mm, compatible with open and closed pallets. AI deep recognition with depth camera identifies carriers in real time, recognizing multiple specifications, colors, and types with multi-angle high precision. It supports intelligent cargo detachment detection and soft-body safety stacking. A 48 V 315 Ah lithium iron phosphate battery provides 10 to 12 hours endurance with 2-minute quick battery swap, and just 10 minutes of charging provides 30 minutes of operation. A 360-degree scanning range with 30 m detection range, 2D obstacle avoidance laser, distance sensor, and hardware self-checks provides multi-layer safety. Ultrasonic detection with adaptive laser dynamic monitoring ensures safe stacking. Speed is 1.0 m/s full load and 1.5 m/s no load with ±10 mm and ±1-degree positioning accuracy. Multiple flexible customizations include size, fork automatic pitch, and fork automatic adjustment. Right-angle stacking aisle widths range from 3,339 to 3,417 mm plus 200 mm. ISO 3691-4, EMC, UN38.3, and RED certified. Targets heavy industrial logistics and manufacturing counterbalanced forklift applications.