Features & Specialties:

Inkjet Cartridge For HP C8727A (hp27) and HP C8728A(hp28).

1)Top quality and competitive price

2)Perfect image result

3)Color: HP27 is Black, HP28 is Color 

4)For use on HP Deskjet 3320/PSC 1350/Officejet 5679  printers.

Techonic Specifications:

1. All the inkjet cartridge had been strictly done 100% print test, and put at least 7 days later for Second print test to ensure the stable quality.

2. Ageing test: check the chemical stability, and make sure the valid life for inkjet cartridge is over 2 years.

3. Erosive test: check the PH value of the ink, and make sure the ink will not be harmful to the print head.

4 .Environmental test: test the functional stability under extreme conditions during shipping for acute temperature drop or increase, air pressure flotation, exposure to strong sun light in order to have the best effectiveness of printing.

5. Waterproof test: test ink permeation to make sure there be no diffusion, no color deviation and no teeth like shape for printouts.  

6. Adhesiveness test: Test the adhesiveness of the ink, and guarantee the durability of printouts.

7. Printing test: check the normal function of an inkjet cartridge for no break line, no mixed color, no leakage and no color deviation in use.