Avonce 5 pack Compatible Ink Cartridges for hp 564 564xl ink cartridges Printer Compatibility:Photosmart 5520 Photosmart 6520 Photosmart 7520 Photosmart 5510 Photosmart 6510 Photosmart 7510 Photosmart 7525 Photosmart B8550 Photosmart C6380 Photosmart D7560 Premium C309A Premium C410 Officejet 4620 Deskjet 3520 Why chooes Avonce? Question & Answer Q:AVONCE is a brand?A:Yes,AVONCE is the United States registered brand, AVONCE shop in good faith, service-oriented business philosophy. Q：How to keep stable & High quality？A：All ink cartridges are manufactured in an ISO9001,ISO14001 certified facility。 production of 70 million ink cartridges per year, sold to worldwide It was manufactured with state-of-the-art technology automated machinery Defect rate is below 0.3% for all the ink jects in last year. Q:what is our promise?A:If you the product you purchased have any defective (which covers any quality, reliability and performance issues) , please click return. We can promise 100% quality guarantee & 24 month money back guarantee. Q:How to use it correctlyA:【Attention 1】：Carefully read all instructions on the packaging, all the operating requirements have been detailed guidance in the obvious place of the product, according to the illustration operation, you can simply and safely use. 【Attention 2】：The computer would appear error, please click "OK" continuously, then the printer can go on to print。 【Attention 3】：After new cartridges installed, if streak happens,try re aligning your printer heads,then hit your printer clean option and that should take care of this issue。 【Attention 4】：If the inks do not recognize your printer at the first time ,please take them off and install again.
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