The wooden pallet is a pallet made of natural wood. It is the most widely used tray now. A pallet is a horizontal platform device for loading, stacking, handling, and transporting goods and articles that are unit loads. It is generally made of wood, metal and fiberboard, which is convenient for loading and unloading, handling unit materials and small quantities of materials. The types of trays are mainly wood, plastic, metal and other materials. Wood is now the most widely used because it is cheap and strong.