Flour is not as stable as it looks. Beneath the white powder lies a complex chemical structure prone to lipid oxidation and enzymatic degradation. Traditional paper sacks are failing to protect modern supply chains. This engineering report analyzes the shift toward advanced powder packaging technology. We explore how the Jialong flour vacuum packing machine creates an anaerobic environment to prevent flour rancidity, drastically extend flour shelf life, and redefine the standards of industrial flour packing.