A warehousing system for storing and retrieving goods disposed in containers is provided. According to one aspect, a media base security device can include a lock rod mechanism coupled to a portion of a media base housing including a security lock aperture operable to receive a security lock. This improves the etch resistance of the resist pattern, since carbon generally contributes to improvements in the etch resistance of a resist film. In a state where collector plates are stacked with electrolyte films placed therebetween, the supply holes connect to form a supply manifold, and the discharge holes connect to form a discharge manifold.