Traditional quality inspection of fiberglass tube yarn suffers from two major drawbacks: low manual sampling rates and only external inspection after tube insertion, neglecting internal quality. Xi'an Huode Innovation has launched a single-spindle inspection device for twisting machines, achieving full-process quality monitoring: real-time detection, process monitoring, data traceability, and system management. This significantly improves yarn quality and efficiency, saves manpower, and lays the foundation for subsequent weaving.