It is a flexible transportation packaging container. It boasts advantages such as moisture-proof, dust-proof, radiation-resistant, and sturdy safety, and has sufficient structural strength. Due to the ease of loading and unloading as well as handling, efficiency is significantly improved, and its development has been rapid in recent years.

Easily transportable for bulk powdered materials, featuring large capacity, light weight, and ease of loading and unloading, it is one of the common packaging materials. It is characterized by its simple structure, light weight, foldability, minimal space when empty, and low cost.