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In this paper, centered on transformation electrostatic (TE) methodology, the look principle of an arbitrary form dc electric concentrator is initiated which yields the enhancement of static electric industries in a predefined area with only 1 homogeneous conductivity, known dc null medium (DNM). It's shown this 1 continual DNM is enough for localizing regular household current in almost any arbitrary shape region, which in turn obviates the tedious mathematical computations that standard practices have proble