PKU DELICHEM COMPANY is founded in 1993 by Peking University, a world-famous university. She has used the strong technology resource from Department of Chemistry, Peking University to develop many kinds of anti-counterfeit technologies.

　During the last 10 years, she has become a professional company devoted to researching, producing and selling kinds of products related with anti-counterfeit technologies. She has five series of products. First is anti-counterfeit fluorescent pigments, such as long wave (365nm) UV fluorescent pigments and short wave (254nm) UV fluorescent pigments, which have different colors. They also can be classified by organic and inorganic. Second is IR upturn luminescent pigments, which are inorganic, and have different colors. Third are kinds of anti-forgery printing ink made from pigments mentioned above. These special printing ink can be used to print portfolio securities, certificate, merchandise packaging and label to anti-counterfeit. Fourth are kinds of fluorescent fibers made from pigments mentioned above. The fluorescent powders mentioned above can be introduced into kinds of fibers by some special ways. The fibers used here include polypropylene fiber, polyamide 6 or nylon 6 fibre，terylene，nitrilon or Orlon，etc. These products can be named fluorescent fibers which can be used in papermaking to produce some special papers.

　Fifth are kinds of detectors to detect the color-changing phenomenon of pigments mentioned above. They can be classified portable or table, IR laser detector(infrared laser radiation) or UV fluorescent detector.