4. no resistance guide rail equipped, it¡¯s stable and longevous, brings low noise when moving. \n 5. 4pcs of big cartridges supply inks separately for every line of nozzles, it ensures output with high speed & quality. \n 6. steel wire transmission system improves the positioning of ink drops, thereby improving the printing quality. \nspecial is committed to protecting our environment by providing you with eco-friendly products.\n