The paper for making RMB is called coinage paper, and the raw material for making this paper is mainly cotton linters, which is much more expensive than ordinary paper-making raw materials. The formula of papermaking raw materials has a strict fixed ratio. Made of paper, the texture is smooth and delicate, tough and folding-resistant, crisp and flat. If you shake the coin in the air with your hands, or loosen and pull it at both ends with your hands, or flick the paper with your fingers, it will make a crisp sound. The raw materials of ordinary printing paper are mostly straw, straw, rags and so on. Paper is soft and rough, lacking in toughness and tension, and easy to break. If it swings in the air, its sound will become dull.

The ink for printing RMB is not ordinary ink, but a special security anti-counterfeiting ink produced by China Banknote Ink Co., Ltd., located in Gaoxing Town Industrial Zone, Pudong New Area, Shanghai. This recipe is strictly confidential.