The Chinese national standard "Logistics Terminology" defines a pallet as a horizontal platform device for placing goods and products as a unit load for container, stacking, handling and transportation. As a container-like equipment, pallet has been widely used in production, transportation, storage and circulation, and is considered as one of the two key innovations in the logistics industry in the 21th century. As an important equipment for loading, unloading, storage and transportation in the process of logistics operation, pallets play a huge role in modern logistics when used in conjunction with forklifts. The benefits brought by pallet to modern logistics industry are mainly reflected in: it can realize unitization, standardization and standardization of goods packaging, protect goods, and facilitate logistics and business flow. Pallet is also called pallet and splint. There are at least two kinds of trays according to their functions. One is the tray in daily spoken language, and the tray where bowls and lamps are placed when serving food. The other is a pallet for logistics. As a daily tray, put some dishes and bowls. There are many types of pallets in logistics, according to the material, use, table top, fork-lift way and structure. Especially in some occasions that require fast operation, due to the high efficiency, safety and stability of pallet operation, the utilization rate is increasing. There are various types of pallets in the market, including wooden pallet, plywood fumigation-free pallet, four-way pallet, double-deck pallet, European standard pallet, European standard CP3, square pier pallet, single-sided plywood pallet, double-sided plywood pallet, serial number, thickened plywood, double-sided Tian Zi plastic pallet, blue plastic pallet, European standard CP3, black plastic pallet and 12KGS black Tian Zige. In addition, there are various special trays, such as flat glass container tray, tire tray, long-sized object tray and oil drum tray, etc.