Nowadays, JS is used in every possible way. Basically, it is recycled, filled with ink and packaged before being sold. There are also those with high defense. The identification method is very simple. There is an HP logo on the outer packaging of the ink cartridge. Turn the box and the color of the logo will change from dark blue to light blue. There is also an identification code that you can call to check. The inner packaging is a vacuum bag. There is really no gap and the air is sucked out very well. It is clean and has a smooth surface, while the fake ones are not so finely made, the surface is uneven, and the labels are crooked.