1.Reasonable price.2.Stable quality.3.Most Professional.4.Delivery asap. 1, It performs electronic tests and print tests for 116 HP, Lemark cartridges etc. 2, Replaces printers to print only need 5 seconds to 10 seconds.3, Special designed cartridge workholder make fix in and out of the cartridge freely without destroy the cartridge. Cartridge Test Machine