All O.E.M. products selling in ink4HOME are distributed from official authorized channels, free from substandard or fake products. All information of O.E.M. products, such as package, volume, colour, models number and warranty conditions are subject to manufacturer's final decision.

All compatible products have are certified with ISO9001 and 14001, and National's Green Procurement Certificate, monitored and tested by specialized technician, guaranteed full compatibility with O.E.M. printers. All compatible products are entitled to 2-year warranty. Within the warranty period, free exchange is available for any quality problem.

Our 'Best Quality Assurance' applies to all compatible products. We sincerely promise you that if your printer gets problem after using our compatible cartridges, we will offer you a free printer check-up service. If your printer is damaged by our cartridges with proof of original manufacturer, we will offer you a new printer with similar functions and quality.