It is super cheap, and there is no inconvenience even if using it. It is understandable that any additional instruction manual for ink can be done by an amateur. I tried to print the letter for printing, but it does not change at all. It was a big help! We will continue to add / continue from now!
I was using the product of this company from the previous printer, I was lost to use genuine replacement ink price to buy and replace the printer. First you could drop it in the ink tank and drilling with the screws could not be done on the above figure, but once you get used to it you are OK. It is saved when prices are cheap compared to genuine products when printing in large quantities.