QDC hardware dies are divided into several types, such as sleeve QDC dies, ordinary QDC dies and QDC special blanking dies. Among them, the nesting QDC mold is a QDC hardware mold used on the small hole nesting die cutting machine; Ordinary QDC die is a new die-cutting die developed in recent years. QDC special blanking die is a simple combined blanking die, which is easy to assemble and disassemble. It can be used with etching die or engraving die, and has the function of full cutting or half cutting. Punching adopts wire cutting, which has high precision and can be repeatedly ground, punched and cleaned.