Adjustable fabric bags feature even ventilation, stable dimensions, wear resistance, high temperature resistance, corrosion resistance, long lifespan, and energy-saving advantages, and are widely used in industries such as cement, metallurgy, building materials, electromechanical, and chemical industries. These bags are mainly used for packaging and recycling of solid powders, such as bulk cement, dust unloading, etc. Typically, a set consists of an inner tube and an outer tube, with the inner tube for packaging and the outer tube for dust prevention.