1) Inkbank ink 100% compatible with OEM ink 2) Produced in the most advanced dust-free workshop 3) We hafe MSDS ,ROSH certificate for our ink. 3) With tertiary filtration at 0.2micro, which it can filter out the impurities and particles in the ink so as to avoid jamming of the nozzle, never jam the nozzle 4) The color paste is imported from USA and the chemical additive is from Germany and Japan, the formula is supplied by Japanese specialist 5) 20L 5L 1L 500ML 200ML 100ML refill kits awailable