There are many kinds of corrugated boxes. According to its structure, it can be divided into three categories: slotted carton (02) : Slotted carton is the most basic type of carton in transportation packaging, and it is the most widely used carton at present. It is composed of one or several pieces of processed corrugated board, through the method of stitching or bonding the carton. Its bottom and top of the folding sheet (upper, lower shake cover) constitute the bottom of the box and the box cover. This kind of carton in transportation, storage, can be folded flat, has the advantages of small size, easy to use, sealed dustproof, clean inside and outside, etc.. Set type carton (03) : Set type carton is composed of one or several pieces of processed corrugated paperboard, its characteristic is that the box body and the box cover are separate, when using the set. The advantages of this kind of carton are packing, sealing convenient, goods loaded after not easy to fall off, the overall strength of the carton is higher than the slotted carton. The disadvantage is that the volume is large and the transportation and storage are not convenient. Folding carton (04) : Folding carton, also known as special-shaped carton, is usually composed of a piece of corrugated cardboard, which is folded to form the low, side and lid of the carton without stitching and bonding. In order to protect goods from damage in the process of transportation, according to the characteristics and requirements of different commodities, the need to design a reasonable structure of the annex, to protect the role of goods. The basic carton accessories are as follows: A: Used for the packaging of fragile and fragile bottles, to separate each item in the box to prevent shaking and collision. B lining board: lining board is basically composed of three, one is full lining board, used for stacked in the box for layered isolation. The second is the bridge lining board, which is used for shaking the cover and closing the cage in the carton to cushion the gap. The third is the lining ring, in order to improve the compressive strength of the carton and protect the goods, in the carton four sides are surrounded by lining board. C liner: according to the different shapes and weak parts of the goods, design a variety of liner, used to fix the goods, to ensure that the goods in the process of transportation will not move, at the same time has the role of cushioning.