Review on HOTCOLOR F6V30AB F6V31AB Cartridge DeskJet by Patrick Nepal

I have purchased this item 7 times. It used to be good! The last cartridges I used didn't work very well. I finally opened my LAST black cartridge and my printer didn't recognize it at all. Writes that I'm out of ink. I took it out and compared it to the previous cartridge, they look different. The one on the right is the one I removed (which worked) and the one on the left is the one that didn't work and looks completely different! I don't know if they got a new supplier or if they decided to lower the cost of production, but the quality has definitely gone down. DO NOT waste your money on this! Chances are it doesn't work AT ALL and you lose your money.