Polyester resin is a type of synthetic resin commonly used in various applications, including construction, automotive, and marine industries. It is created by combining a polyester polymer with a hardening agent, resulting in a durable and versatile material. Polyester resin is known for its resistance to moisture, chemicals, and UV light, making it suitable for outdoor use. This resin is often used in the production of fiberglass products, such as boats and car parts, due to its lightweight and strong properties. It can be easily molded into different shapes, allowing for creative designs in various manufacturing processes.