Coaming box is a new type of wood packaging product independently developed by shounaide packaging. It can be customized according to the requirements of customers. The structure of coaming box is shown in the figure, and it is made of plywood board connected by high-strength metal fasteners. The coaming box has many characteristics, such as safety and economy, wide range of application, no nail structure, convenient disassembly and assembly, recyclable, foldable, stackable, no fumigation and so on. It can not only load fragile products, but also package all kinds of mechanical and electrical products, with excellent anti-collision, anti-theft and other multiple protection functions; the tray coaming unit packaging can also be stacked in multiple layers or placed on the shelf. The hoarding can be folded for storage and transportation, and the volume is only about 1 / 12 of the packaging volume, which greatly reduces the transportation and storage costs of packaging materials, and greatly improves the space utilization of the warehouse. According to incomplete statistics, however, there are 500 million coaming boxes in Europe, and the annual output of coaming boxes exceeds 50 million. Solid pallet coaming unit packaging is a unique wood packaging solution with strong adaptability and in line with the principle of recycling in green packaging.