The page yield of toner cartridges is typically tested according to the STMC international standard. Testing uses specific sample prints (such as ISO/IEC 19752), and multiple printers are used for comparative printing under standard temperature and humidity conditions. Toner usage and the number of pages printed are recorded, and the average value is calculated. Through repeated testing and random sampling, the stability and consistency of the toner cartridges under different environments can be verified. The main factors affecting page yield include toner density, photosensitive drum performance, print coverage, and environmental conditions. ACO compatible toner cartridges strictly adhere to the STMC testing process to ensure that the page yield of each […]

ACO thermal master rolls are engineered for consistent image quality and stable feeding performance in Risograph duplicators.Designed to support professional printing environments, they help B2B customers achieve reliable duplication with minimal waste. Ideal for educational institutions, commercial print shops, and government print departments, ACO master rolls provide dependable results across high-volume workflows.

ACO provides high-quality toner cartridges and printing consumables designed for long-term business cooperation.With stable performance, consistent output, and scalable production, we support B2B partners worldwide. Whether you are expanding your distribution network, developing private labels, or managing large-volume supply,ACO delivers dependable products and responsive support to help your business grow.

ACO drum units DR-820 DR-3405 DR-3425 DR-3415 DR-3455 deliver up to 30,000 printed pages, helping businesses minimize downtime and maintenance frequency.Each unit is precision-engineered for perfect compatibility, stable performance, and easy replacement. Whether you are supplying office equipment, managing print fleets, or building your own brand,ACO provides dependable drum unit solutions to support long-term growth.