Principle: different materials in the tested product have different absorptivity after X-ray irradiation, which is imaged by the detector and converted into image information. The image is represented as a gray-scale image. Different materials or foreign objects have different gray levels. After preset algorithm processing and graphic image technology analysis, foreign objects are separated from the tested product. Taiyiming X-ray foreign object detection machine, based on the unique high-speed processing algorithm of the real-time system, A high-performance X-ray foreign object detector developed by integrating the technical foundation of the Korean electronics industry.