How to refill the ink cartridges?

- Insert the ink bottle under the ink cartridge into the ink hole of the ink cartridge;
- Turn it upside down so that the ink bottle is above the ink cartridge, and then squeeze the ink bottle until it cannot be squeezed.

- The piston of syringe should be pressed to the bottom. Insert the needle into the original ink cartridge hole, and then pull up the piston.
- Generally, after ink out of 0.5ml to eliminate the air, the refill process is completed.
How to replace the chips?

- Pry the original encryption chip away with sharp tools, and then paste a new encryption chip in the original position