ciss /Continuous Ink Supply system/ink cartridges for inkjet printers hp/canon/epson/brother inkjet printers. 1) patented products 2) premium ink manufactured in South Korea 3) imported materials 4) with newest 6.0 resettable chips 5) manufacturer's direct supply and prompt delivery 6) detailed user-handbook 7) excellent after-sales services 8) save money up to 90% Attention: D-model CISS is our patented product and we are the only manufacturer of it in China. We've already obtained several patents with it but some companies stillcounterfeit it, which infringes rights and benefits of our customers, distributors and ourself. Though the counterfeit/fake products look like our D-model CISS, but the quality is not the same thing. Tolist some differences as below for your reference A) The name: D-model is the only name we callthis patented CISS. Any products look like our D-model but with a different name will not be our products. B) The height of ink tank's window: D-model CISS has a higher window than any other fake/counterfeit CISS. C) Brightness,transparency and materials used: These you may not tell the differencesjust from pictures,but once you get the goods on hand and compare, differences will be obvious. You are welcomed to visit our website for more details or leave message here or contact us directly.