Abstract: An exemplary box includes four sidewalls, four covers, two inner flaps, and two out flaps. The sidewalls are continuously connected together end by end and enclose a chamber therein. The covers extend from top edges of the sidewalls respectively for covering the chamber. The flaps extend from bottom edges of the sidewalls respectively. The inner flaps form two engaging flanges respectively extending from free edges thereof into the chamber and define engaging grooves therein. The outer flaps form engaging flanges respectively extending from free edges thereof into the chamber and define engaging cutouts in the engaging flanges respectively. The engaging flanges of the outer flaps are inserted into the engaging grooves of the inner flaps and snap the engaging flanges of the inner flaps in the engaging cutouts. The engaging flanges of the inner and outer flaps thereby divide the chamber into several compartments.

Abstract: An inner package includes a plurality of containing sections. Each containing section includes a bottom board, several side boards each connected with the bottom board by a folding line formed on the containing sections. The inner package is unfolded as a rectangular board. The bottom board and the side boards share a same boundary with the rectangular board.

Abstract: An exemplary box includes four sidewalls, four covers, two inner flaps, and two out flaps. The sidewalls are continuously connected together end by end and enclose a chamber therein. The covers extend from top edges of the sidewalls respectively for covering the chamber. The flaps extend from bottom edges of the sidewalls respectively. The inner flaps form two engaging flanges respectively extending from free edges thereof into the chamber and define engaging grooves therein. The outer flaps form engaging flanges respectively extending from free edges thereof into the chamber and define engaging cutouts in the engaging flanges respectively. The engaging flanges of the outer flaps are inserted into the engaging grooves of the inner flaps and snap the engaging flanges of the inner flaps in the engaging cutouts. The engaging flanges of the inner and outer flaps thereby divide the chamber into several compartments.