Carton (English carton or hard paper case): It is the most 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, seven layers are less used, each layer is divided into lining paper, corrugated paper, core paper, face paper, inside and face paper are teaboard paper, kraft paper, corrugated paper for core paper, various paper The color and feel are different, and the paper (color, feel) produced by different manufacturers is also different.