The significant advantage of lightweight paper is its environmental friendliness! When it comes to environmental protection, we must talk about the bleaching of paper. "High whiteness" used to be the key factor for paper to be considered prestigious. High whiteness can remain unaffected by the color of the paper itself and can better complete color printing tasks. However, most bleaching processes are not environmentally friendly. After people gradually realized that high whiteness could also cause harm to the eyes, the selection of high-whiteness paper for books has become particularly cautious. The production and processing of lightweight paper in Northern Europe generally involves chlorine-free bleaching, light bleaching, no heavy sizing, or even no sizing at all. This greatly improves the efficiency of using forest resources and makes recycling easier, significantly reducing the damage to the environment. Environmental protection and low-carbon are the inevitable trends.