Eternal flowers, also known as preserved flowers or ecological flowers, are a type of fresh cut flower that has undergone special processing techniques. The production process includes steps such as dehydration, decolorization, and dyeing. This processing method not only preserves the color, shape, and texture of fresh flowers, but also makes the colors of immortal flowers more diverse and their uses more extensive. Immortal flowers can be preserved for at least 3 years, and even under ideal conditions, they can be preserved for 5 years or even longer.