ROHS detector is a rapid analysis instrument, which uses energy dispersive X-ray fluorescence analysis method for analysis. The required sample size is 300 × 300 × 100mm for small samples and unlimited for large samples. It is detected by a semiconductor high-sensitivity detector, observed by a 1.3 million resolution color CCD camera, and automatically filtered by eight new types of filters. It is suitable for the detection of samples such as plastics, metals, films, powders, liquids, etc. It is a high-tech testing instrument and an analytical instrument that is suitable for the field of label development in Maidian.