First, a box made of metal is practical. Secondly, it provides an airtight seal, protecting contents from moisture, pests, and light and ensuring product longevity. Thirdly, their sturdy construction makes them incredibly strong against the threats of transportation or handling damage. Fourth, these iron boxes are eco-friendly. Many are now even made from recycled materials themselves and can be melte and reshape again many times over in the futureoad--yielding some economic return. Fifthly, they are versatile enough to be used for different purposes, whether as elegant gift packaging or industrial storage. Finally, thanks to their custom design, they have become a very salable means rather than just some plain old storage container. If people uses your brand name for advertising tools of manufacture then you are in fact an advertising medium and not simply the maker's product on offer.