To address the stringent requirements of the precision hardware industry for dimensional tolerances, surface finishes, and assembly matching of micro-parts, Wenzhou Yihe Intelligent Technology Co., Ltd. has launched a full-scenario visual inspection solution: Utilizing a laser interferometry system, it achieves a diameter inspection accuracy of ±0.002mm for micro-gears and precision shafts. Combined with a self-developed multi-sensor fusion algorithm, it performs sub-micron-level quantitative analysis of gear tooth profile deviation and spline symmetry errors, meeting the ISO 2768-k precision tolerance standard. In the stamping parts inspection stage, a 3D vision-guided system combined with structured light scanning technology monitors the flatness deviation of 0.1mm thick stainless steel sheets in real time, controlling waviness within ±5μm, helping Foxconn connectors and Amphenol precision structural parts achieve a yield rate of 99.2%. For complex hardware assembly, a deep learning-