Banknote paper: The raw materials used in banknote printing paper are mainly long-fiber cotton and hemp. The paper is tough, smooth, and sturdy. It is resistant to folding and lint-free. Some countries have also added special markers or randomly distributed red in paper pulp. Green fiber silk. The bank note printing paper has no fluorescence, and it is convenient to observe the anti-counterfeiting mark printed with the fluorescent ink under the fluorescent lamp. Plastic bills made of plastic instead of paper have been made more durable. Banknote printing paper can of course also be used for important documents such as government bonds, stocks and other valuable securities or passports.