for use with these printers HP Designjet 10ps/20ps/50ps/120

When you buy it ,please tell us these information notice that: IMPORTANT! ! ! ! !

what's type of your printer

what's the model No. of the cartridges used on your printer

what's the color order of the cartridges from left to right when you face the printer

Please check the model of the ink cartridges and the model of the printer. Only when both of them are the same as the description here, then the Continuous Ink System can work properly.

• Convenient To Refill-Very easy to refilling process
• High quality, low cost, easy maintenance，no more other cartridges is needed! Environment friendly.
• Quality Material- High quality PP material, compatible for any types of ink, corrosion-resistant and anti-aging.
• Stable Performance- Excellent compatibility of the cartridge and chip, 100% compatible for your printer