1 invention patent, 6 new patents, 3 design patents 80% of the whole machine is made of aluminum alloy, which achieves the target characteristics of light weight, high strength and good flexibility. AI Speed Control System Innovative infrared grating technology can also be identified between one finger. Three-step start-up rules, young children’s foot protection rules, completely prevent unintentional start. Innovative infrared grating technology can also be identified between one finger. Three-step start-up rules, young children’s foot protection rules, completely prevent unintentional start.