Ton bags, also known as flexible freight bags, container bags, space bags, etc., are medium-sized bulk containers and are a type of container unit equipment. Equipped with cranes or forklifts, they can achieve container unit transportation.  It is easy to transport bulk powder materials, with the characteristics of large volume, light weight, and easy loading and unloading, and is one of the common packaging materials. Its characteristics are simple structure, light weight, foldable, small space for return space, and low price.