The circular robot chassis is a service mobile robot platform developed by Lantu Technology to meet the application needs of factory logistics handling, education and research, and hospitality. Its fusion company independently develops core SLAM technology and possesses fully autonomous navigation capabilities based on natural landmarks in complex dynamic scenes. No need for any artificial landmarks, suitable for complex dynamic scenes. It can be connected to intelligent charging stations and can achieve 7X24 hour operation. Supports status control and monitoring, and can be integrated with WMS/EPR/MES systems. To meet the application needs of industrial customers, trays, lightweight collaborative arms, rollers, etc. can be installed to achieve automatic docking with factory equipment. To meet the application needs of educational customers, we provide underlying drivers and control interfaces, integrate multiple sensors such as lasers, vision, and depth cameras, support ROS/ROS2 systems, make it easy to start, and facilitate secondary development. It can also serve as a motion chassis for welcome service robots, used for welcome services in hotels, exhibition halls, and front desks.