2K mold allows two different materials can be used on one injection machine. It includes twice injection, but just one product got. It is also called the double injection molding, usually performed by a set of mold, but the process should be on a special double injection machine. 2K mold has been extremely popupar in recent years, because it can make the product looks nice but needn't be paint. Usually the technism requirements is quite high, and the cost is much expensive than other molds.