Problem to be solved. To provide a mobile rack system for egg packs which can correspond to automation, a transfer device, an intermediate container housed in a mobile rack for the egg packs, an egg pack transfer device, and a manufacturing method of egg pack groups. Solution. A mobile rack system 1 for egg packs P displays the plurality of egg packs P in a storefront. The mobile rack system 1 comprises a roll inner 2 and a plurality of intermediate containers 3. The roll inner 2 comprises a plurality of foldable shelf boards 21. The intermediate container 3 is housed on the shelf board 21 in a developed state, respectively. Moreover, the intermediate container 3 comprises an opening part in which the plurality of egg packs P are arranged, and which is accessible to the egg packs P from the front surface side of the roll inner 2.

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