A4 paper is defined by the ISO 216 standard of the International Organization for Standardization; its specification is 21 cm × 29.7 cm. A4 paper machine is suitable for office paper, printing and copying paper, and supports different weights per unit area and production capacities.
TEC-NAF is a professional supplier of paper machine equipment, specializing in the research and production of paper machines. Our product includes pulp mill machinery, spare parts, and paper production lines, such as printing paper machines, packaging paper machines, and special paper machines.