◆ Key ink material: ① solvent and color paste came from Germany to make sure smooth and colorful printing which is as similar as original HP ink. ② The ink was produced with filtered purified water. You can use our Lucky Bridge brand ink to print very beautiful and clear photos and drawing, also can protect printer printhead very well. 2 ◆ Compatible: HP 950 951 60 61 620 63 64 65 952 902 901 21 22 920 940 934 564 932 933 711 970 971 92 94 95 96 97 etc Cartridges. Refill ink kit for all HP inkjet printer, refillable cartridge, CIS/CISS system, remanufactured cartridges, original cartridges. ◆ Money and quality warranty: we will send warranty card with shipment. Lucky Bridge brand ink almost compatible for all your HP printers. However, in case any problem, 2 years warranty: 1) send good and new one to you as replacement, it is free; or 2) refund the payment to you fully ◆ Printing use for: engineering drawing, CAD drawing, photos, all docs, picture. Use our ink at home, bank, hospital, school, government and company office etc. refill ink