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Specific features of the 3-class anti-counterfeit inspection

· Lower-level qualitative anti-counterfeit inspection
Color patterns, words, and lines can be observed if the anti-counterfeit mark is radiated by infrared source. Combination of colors can be observed as well. In addition, each color can be adjusted to different shades, such as the dark yellow and light yellow illustrated in Fig.1-b. A combined color can also be obtained.

· Medium-level semi-quantitative anti-counterfeit inspection
Improvement is made in the means of inspection to obtain qualitative spectrum, referring to Fig. 2. It can be observed from the figure that spectrum distribution of anti-counterfeit mark can be determined and different samples can be observed and distinguished by naked eyes. Multiple spectrum distribution can be obtained through multiple combinations.

· Price of the anti-counterfeit product itself is fair and it is easy to make inspections