Polyester Resins are versatile thermosetting polymers widely used in industrial and commercial applications due to their excellent mechanical strength, chemical resistance, and durability. Formulated through the reaction of polyhydric alcohols with dibasic acids, these resins cure into rigid, high-performance materials ideal for use in coatings, composites, adhesives, and fiberglass-reinforced products. Available in both saturated and unsaturated forms, polyester resins offer customizable properties for applications ranging from marine and automotive to construction and electronics. Their adaptability and cost-effectiveness make them a key component in modern material engineering.