Luminous/light in dark masterbatch is a special additive, usually used to make luminous materials. This kind of masterbatch contains substances that can emit light in the dark, such as fluorescent powder and phosphorescent powder. When manufacturing luminous products (such as luminous watches, luminous watches, luminous toys, etc.), luminous masterbatches will be added to plastics or rubber to make the products absorb energy under light and glow in the dark. Luminescent masterbatches are widely used in industries, consumer goods, architectural decoration and other fields, and have good market prospects.