This article reviews the top functional polyol manufacturers and suppliers in Spain, highlighting key companies such as Biesterfeld, Elastogran, Barcelonesa, Gantrade, and Derypol. It covers the definition, industrial applications, sustainability efforts, market trends, challenges, and future outlook of functional polyols in Spain. The article also includes a FAQ section addressing common questions about functional polyols in the Spanish market. The emphasis on innovation and sustainable practices reflects Spain's rising influence in the global functional polyol industry.