Multilayer electronic component and injection system using same

A multi-layer electronic component comprising: a stack having an effective region formed by stacking at least one dielectric layer and a plurality of internal electrodes consisting of first and second internal electrodes one on another and protective layers provided on both ends of the effective region in the stacking direction; and external electrodes formed on two side faces of the stack with one of which being connected to the first internal electrode and the other external electrode being connected to the second internal electrode, wherein the effective region consists of an active region where adjacent first internal electrode and second internal electrode oppose each other and an inactive region located outside of the active region in which the first internal electrodes or the second internal electrodes oppose each other, and wherein the active region and the inactive region have different colors to appreciate a border between the displacement section and no-displacement section obviously.