Delivery service robots (high-end version) are mainly used for delivering coffee, meals, documents, experimental materials, medicines and other items in cafes, restaurants, office buildings, hotels, laboratories, hospitals, etc. No need to lay QR codes, reflectors, or barriers in advance in the work environment, deployment is simple. Equipped with 2 layers of internal trays, the cabinet door automatically opens and closes to ensure the safety of delivery items. Smooth outer contour design, flexible movement, safe obstacle avoidance, suitable for dynamic and complex scenes with many people. By taking the elevator independently and charging through the glass door, customers can save manpower investment, reduce operating costs, enhance brand value, and improve service quality.