PRODUCT DESCRIPTION: 1. The use of ultra-fine metal filter products will longer durability, and won? block the nozzle. It has the same durability with ink. We choose Japan imported original ink and the durability is more than two years. There is no need to worry about the quality of ink cartridges chemical reaction, which will undoubtedly improve the quality of the product. 2, A special balance wharf to replace the original sponge, without sponge ink will be able to smooth out the hole, Processing - not and broken-not. 3, Without sponge it can save sponge material costs and the processes, thus saving labor costs and the ink stays on the sponge, which will not only greatly increased the utilization of ink, but also reduce the ink volume and save ink costs. After ink cartridges exhausted they live the most recyclable plastic and will not be unable to deal with garbage. This made us products to meet environmental standards 4.Products can be printed normally without additional cleaning. They can be repeatedly removed from the printer and then be installed to use g without additional cleaning. 5.Our products have three concepts:good quality,energy-saving,green.This idea will become the trend for inkjet ink cartridge.Let us see the new C-series and R-series printers which do not use the sponge ink cartridge.EPSON ink cartridges in our company are no sponge too! The national standards on inkjet ink cartridge will also be introduced on the basis of this concept.f Used for the following type: HP K550