1. The production of nuclear track film must use nuclear reactors and other large-scale nuclear facilities specially controlled by the state. Only a few nuclear research units under the state control in China have such equipment, which is impossible for any individual or group to own. At present, only the nuclear reactor of Tsinghua University Nuclear Technology Design Institute has the ability to produce nuclear track film in China. High monopoly determines the non producibility of general enterprises. The production of nuclear track anti-counterfeiting is unique. The production of nuclear track anti-counterfeiting marks requires the joint participation of nuclear physics, chemistry, electronics, machinery, optics and other disciplines.
2. The nuclear track anti-counterfeiting logo pattern is composed of hundreds of thousands to millions of micron sized micropores per square centimeter. It has the characteristics of "micro dense macro display", which makes the invisible millions of pixel sets "zoom" into visible macro patterns. The density, gradient, aperture and distribution of micropores form a strict password signal, which is an insurmountable obstacle for imitators. The unique micro hole distribution law of the nuclear track anti-counterfeiting mark, the scattering angle of the cylindrical micro hole and its distribution law enable the anti-counterfeiting mark to clearly identify whether it is processed by the nuclear reactor under the microscope, realizing the anti-counterfeiting purpose of combining expert identification with public identification. The anti-counterfeiting pattern cannot be imitated.
3. Nuclear track anti-counterfeiting label product safety evaluation report, the nuclear track anti-counterfeiting film produced by Tsinghua University Nuclear Energy Technology Design and Research Institute has been tested by authoritative departments at all levels, and meets the national "GB4792-84" radiation health protection standard. The radiation level is the background film level. It can be used as the packaging of food, medicine and other products. Widely used, invisible characters and patterns are mostly used for anti-counterfeiting technology.