The P4 from Guozi Robotics is an autonomous tote-picking robot with QR code and laser reflector navigation, capable of accessing 1 to 8 mast layers with docking heights from 310 to 4945 mm. It has a 300 kg maximum payload, measures 1736 by 880 by 5275 mm with an 1825 mm rotating diameter, and handles bins from 300 to 610 mm long by 360 to 400 mm wide. It operates at up to 1.2 m/s with over 8 hours runtime, under 1 hour charging, with front, back, and side safety protection and plus or minus 10 mm secondary stop accuracy.