Automatic stacking machine is also called stacker. It takes frequency changing motor to achieve speed adjustment and electrical control system. Via automatic conveyor, it is connected with other packing machines. It can stack the pail packed product of coating, paint, and chemicals steadily, smoothly, and reliably to a pallet and with the work of a truck lift, pails of coating, paint, or chemicals can be moved away. With internationally advanced automatic control technology and mechanical and electrical integration technology, it repeatedly stacks big pails of finished products to expected pallets, greatly improving working efficiency and reducing worker’s labor load.