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1. Watermark paper The production process of watermark paper was invented by Italian paper-making experts in the 13th century. Because it involves complex manufacturing processes such as design, molding, mesh making, and papermaking, it often leaves counterfeiters helpless. Checking watermarks is also one of the most effective ways to identify authenticity. Of course, the extensive use of watermark anti-counterfeiting on packaging and decoration is not yet economical at this stage. During the manufacturing process of watermark paper, technical means can be used to incorporate the required markings, patterns, etc. into the paper. These patterns are usually not easy to see and can only be seen in strong light. Most of the larger denomination RMB issued in China are printed on watermark paper. In today's era of advanced science and technology, watermarks are still recognized by anti-counterfeiting experts around the world as an effective anti-counterfeiting technology, and continue to be adopted and developed by various countries. Most countries' banknotes, important international documents, facility drawings, and various tickets are also printed on watermark paper. For example, in the 1996 new version of the $100 paper, the watermark of the "Fulanklin" portrait was used, and in China's high-value RMB paper, watermarks such as "Tiananmen" and "Mao Zedong" were produced. Watermarks have been widely used not only in currency paper, but also in other document paper. There are several types of watermark positions in paper, including fixed, non fixed, and semi fixed. |