Ningbo Yijun specializes in global high-precision micro screw solutions. As a technology-driven manufacturer in the micro fastener field, we are committed to providing ultimate precision screws ranging from M0.5 to M3 specifications for the aerospace, medical device, precision electronics, and micro machinery industries.Through an ISO9001-certified production system and fully automated digital production lines integrating CNC turning centers with optical inspection equipment, we achieve millimeter-level precision control with tolerances of ±0.002mm.