Quality Control: STMC,ISO9001 and ISO 14001 certification.

Warranty: 18 months calculated from the date when we delivery you the goods.

Guarantee: 1:1 Return back or refund if the quality problem is caused by our manufacturing.

Defective: All of our goods,we guarantee that our defective rate of black is within 1%, for the common models,within 0.5%, and within 3% for the color toner cartridge.

- We have professional quality control and R&D department to strictly manufacture each product .

- Ensure each product is tested before down off production line.