Refined products are substances that have been processed to remove impurities and enhance their quality. These products are typically derived from raw materials, such as crude oil, and undergo various refining processes to create usable forms. Common examples include gasoline, diesel, and jet fuel, which are essential for transportation. In addition to fuels, refined products can also include chemicals and materials used in manufacturing. For instance, petrochemicals derived from refined oil are crucial for producing plastics, fertilizers, and other industrial goods. Overall, refined products play a vital role in modern economies and everyday life.