Warranty?

Quality control: ISO9001:2015, ISO14001:2015 certificate, more than 29 years OEM service Warranty: 18 months calculate from the date when we deliver the goods Guarantee: 1:1 return back or refund if the quality problem is caused by our manufacturing, process or unsuitable packing Defective: all of our goods, we guarantee that our defective rate of black is within 1%, for common model, 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