Glass-reinforced plastic (GRP) is a composite material made by combining plastic with glass fibers. This combination enhances the strength and durability of the plastic, making it suitable for various applications, including construction, automotive, and marine industries. GRP is lightweight, resistant to corrosion, and can be molded into complex shapes. The manufacturing process of GRP typically involves layering glass fibers with a resin, which hardens to form a solid structure. This material is often used in products like boats, bathtubs, and automotive parts due to its excellent mechanical properties and versatility.