-cartridge code: T0731N-T0734N -with auto reset chip -factory price 

Quality description and assurance:

Warranty:  if any fault products, we will make the replacement for free.

Before leaving the factory , the products go through as following professional test:

1.Mechanical test to ensure the toners smooth operation and no noise, and to

comply with ISO standards.

2.Environment protection test to ensure toner's environment safe.

3.Duration test to ensure toners can last more one year.

4.Diffcult conditions tests such as abnormal temperature, air pressure, strong sun

light and rough trasportations tests to ensure the printing quality remanins high.

5. Water resistant test to ensure printing won't fade and be diluted when wet.

6.Printing quality test to ensure the printing is real black, sharp, no slur and won't

fade.

7.Capacity test to ensure the number of printed pages is the same as the ones of   original manufacturers.