Choose us,what will you get?Reasonable pricehigh-quality productsgood service1.Please confirm PRINTER MODEL before order.For hpAMP 100 120 125 130Deskjet 2620 2621 2622 2623 2624 2625 2628 2630 2632 2633 2634 2652 2655 3720 3721 3722 3723 3724 3730 3732 3733 3735 3752 3755 3758Envy 5020 5030 5032 5034 5052 50552.Our printheads are made of high grade ink and advanced technology.It will be used without color difference,blocked heads,and discontinuous ink.3.Instructions for use◆Pull out the plastic seal carefully before installing it.◆Remove the cover carefully before installing it.◆Insert the cartridge into its correct slot.Please make sure to insert the cartridge FIRMLY into the slot with some force.◆Click "OK" if the printer shows a message such as "NO INK"or"Non-Original".4.Notice:◆To prevent the static affect the stability of the chip,please do not touch the chip.◆If printer appears"Non-Genuine"or"Align Fail"or other error message,please click "YES"or"OK" or"NEXT"to continue,then printer can print.◆If the printer can't recognize printheads,please take off printheads,use eraser to clean the chips softly,install back and restart printer.(We advise you wearing gloves and prevent extra ink)◆If prints come with fading color,steak or broken lines at the first time you install new ink cartridges,please try to do Printer Head Cleaning once or twice.(Cleaning is in PRINTER SETTING)5.Delivery time:10-15 working days,manufacturers sell directly.If you have any questions,please feel free to email us,we will provide you with a 100% satisfactory solution.