An essential ingredient utilized in the creation of polyester raw materials is organic peroxide. The raw material has the necessary features thanks to the use of these peroxides as catalysts in the polymerization reaction. Other ingredients used to color polyester raw materials include pigments and colorants. These substances generally play a significant role, especially in the textile sector, in supplying the necessary color of the raw material. Functional fillers are also important components in the manufacture of polyester raw materials. These fillers are used to improve the properties of raw materials and help increase their mechanical properties, hardness, durability, and flame retardant properties. These fillers include materials such as glass fiber, mineral fillers, and carbon fiber. As a result, polyester raw materials consist of various components such as organic peroxides, pigments, colorants, and functional fillers. These components determine the properties and application areas of the raw material, which makes polyester raw materials have a wide range of uses in industrial applications.