Carton (English carton or hard paper case): It is a widely used packaging product. According to different materials, there are corrugated boxes, single-layer cardboard boxes, etc., there are various specifications and models.
Cardboard boxes are commonly used in three layers, five layers, and seven layers are used less. Each layer is divided into lining paper, corrugated paper, core paper, and face paper. Inside and face paper are teaboard paper, kraft paper, corrugated paper for core paper, and The color and feel are different, and the paper (color, feel) produced by different manufacturers is also different.
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