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Warning: 

1: these chips are Unlimited continuous chips,it will not show ink level but can be worked. 

2:After installing,the printer will show "not genuine ink cartridge",you should press “OK” to agree using it.

For HP Printer models:Designjet T120 T520. 

For HP  Ink Cartridges:711Black, Yellow, Cyan,Magenta;

Caution:

1:If your printer is a new one(never used any ink cartridge),Before using our chip,it needs to initialize printer by your original ink cartridges.

2:When the ink level is about 20% inside the refillable cartridge,you must refill it soon,otherwise it will be locked by the printer.if the refillable cartridge is locked by the printer,it will not be recognized by the printer,then you will need to 

initialize the printer by the genuine ink cartridges.

Advantages:

1.The chip works stable as it is designed by original chip;

2.You can follow the choice"ok" after installing the cartridges,then the printer will show the ink level are empty,"grey" or "?" or "!", but the printer can be printed continuously.

3.BK 58ML;C/M/Y 18ML can be refilled, 3 or 4 times bigger than original;

4.Direct Refill Cartridge can fill the ink directly, adopt creative design, filling ink easily: 

Fill ink full into cartridge by syringe, no use vacuum refill method, no need special filling tool and special technician. 

This is the cartridge invention milestone.
5. Adopt no sponge structure, avoid break printer head becaus of sponge aging.
6.Innovate it base on the first generation cartridge, make sure no leak ink, print spot, block when printing.