Rosin plays a vital role in the papermaking industry, primarily used to enhance the surface properties of paper. By adding rosin resin, the paper's water resistance, durability, and smoothness are improved. Simultaneously, rosin also helps enhance the paper's printability, making colors more vibrant and images clearer. Furthermore, rosin acts as a retention and drainage aid, improving the retention rate of fillers and fine materials while reducing production costs. Consequently, rosin finds extensive applications in the paper industry. Do you know any other ingenious uses for rosin in papermaking? Feel free to share your insights in the comments!