There are many kinds of luggage hardware. According to the material, the hardware can be divided into iron, zinc alloy and copper. The iron metal is cheap, but the shape is limited, the basic structure of hardware components can be made of iron.
Zinc alloy hardware can make all kinds of shapes, because it is die-casting process, so as long as the development of a mold, you can die-casting the desired shapes.
Copper hardware adopts cutting and die-casting technology, but there are few kinds of copper hardware. Because the cost of copper hardware is higher than that of iron hardware and zinc alloy, only high-grade bags can properly select copper hardware.