Laser printers and copiers cannot be separated from the ozone removal filter. Ozone has strong oxidizing power, and a small amount of O3 (0.1~1ppm) can make people feel dizzy, make their eyes astringent, and make their throat sore, while a higher amount will be fatal. Therefore, our company developed the ozone filter. The product can be used in various laser printers, fax machines, copiers and a variety of high-voltage discharges due to the ozone generated by the place. The carrier uses an aluminum honeycomb core, with small wind resistance, ozone removal efficiency (more than 98%), a large capacity of gas removal.