KP-MS03, independently-developed by Hunan Roc Technology, is a lightweight UAV for confined-space inspection. Compact and portable, it accesses narrow, high-risk blind zones for intelligent detection. Adopting fused 3D laser SLAM-visual navigation, it flies stably without GPS against dust, magnetic interference and signal shielding. It supports wireless/fiber dual-communication, 3D modeling and visible-light inspection with multiple return-to-home safeguards. Complete hardware-software solution ensures reliable performance.