1. Document Printing: A4 paper is suitable for printing all types of official documents, reports, papers, contracts, resumes, and so on, an indispensable tool in offices and studies.
2. Document Copying: In the office, A4 paper is often used for copying documents, producing document copies, transferring information, and storing it easily.
3. Handwritten Records: A4 paper is often used for handwritten notes, meeting minutes, draft sketches, etc., to help people record notes and learn better.
4. Origami Art: A4 paper, with its regular size and good foldability, has become the preferred material for origami enthusiasts. Through simple folding and cutting, A4-sized paper can be transformed into various forms of handmade art.