The hottest kind of high-strength cardboard packag

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The utility model discloses a packaging box made of cardboard. Part or all of the corners of the packaging box are formed by bending the excavated slotted cardboard inward along the slotting. The inner corner of the corner is a basically seamless right angle structure formed by the close contact between the two groove edges of the slotting, and the outer corner of the corner is a real right angle. PA) and polycarbonate (the new packaging box for polycarbonate can have the advantages of high strength, low cost and American market competitiveness at the same time. The test data required by each merchant and manufacturer is also different. 1 step in addition, improve the outlook and generosity

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