... refill inks, protect environment.1.Adopt the spongeless structure, avoid to break the printer head because of the cartridge aging. 2.Add two ... struction, make sure not to leak ink, print spot, block the printer head when printing in any environment.3. With different ... , such as R270, R290,T50, T1100, T10, C79, C91 etc. high quality refill cartridge for new model printer