In Kunshan Carton Factory, the higher the hardness, the better the quality. Thickness material are the two key factors that determine the hardness of the carton. There are usually three-layer five-layer cartons, of course there are seven thicker layers. The more layers the cartons are, the thicker they are. The three-layer is a simple three-layer flat board. The injection pallets are wholesale, but two-layer flat plates are sandwiched with a layer of corrugated in the middle, the fifth layer is three-layer flat double-corrugated; three-layer five-layer cartons are also listed as corrugated double-corrugated boxes; cartons There are also many kinds of materials. Good materials are only high in hardness, but also light in weight. Inferior materials are often low in hardness easy to deform; the carton materials on the market are "KK>KA>KB>AA>AB> high to bottom. The BB" KK materials are currently very good materials. The thickness of three layers is enough to carry the weight of a normal adult. The surface is smooth textured. KK is good, but the price is also the most expensive. AA BB materials are hard Slightly weak, but with the thickness of five layers, Kunshan corrugated carton manufacturer also has a high hardness, which is enough to protect the product damage. Guangzhou Carton Factory recommends that sellers choose different types of cartons according to their needs. For example, five-layer AA cartons can be used for fragile valuable items, ordinary items that have been dropped, the product itself comes with a carton. It is enough to choose three-layer cartons. Up.