GFRP (an abbreviation for Glass Fiber Reinforced Plastic, also known as GRP or FRP, with the Chinese name being glass fiber reinforced plastic, commonly referred to as fiberglass reinforced plastic) is a plastic-matrix composite material combining an organic resin material with an inorganic fiber material.

The matrix of GFRP is resin, a thermosetting plastic and an organic non-metallic material, typically including epoxy resin (EP), phenolic resin (PF), unsaturated polyester resin, etc., which generally accounts for 65-70% of the weight of GFRP. The reinforcement of GFRP is glass fiber, which serves to enhance the material; it is a type of man-made inorganic fiber and can be classified into alkali-free fibers, medium-alkali fibers, and high-alkali fibers based on its alkali content, generally accounting for 30-35% of the weight of GFRP. Conventionally, GFRP used in construction must meet fire safety requirements for building materials, typically employing flame-retardant sizing agents and flame-retardant resins.

GFRP possesses excellent electrical insulation properties and high mechanical strength, with high resistance to bending, compression, and tension. It demonstrates strong corrosion resistance, enduring exposure to saltwater and chemicals, and remains unaffected by environmental factors such as acid rain, salt, and most chemicals. It offers exceptional plasticity, allowing for easy shaping, and features a lightweight, thin-shell structure. Its joints can be treated with resin to form an integrated whole, facilitating convenient construction. Based on specific requirements, corresponding materials or additives can be selected to produce GFRP products with special properties such as fire resistance, abrasion resistance, aging resistance, UV resistance, strong acid resistance, sound insulation, and sound absorption.

Due to its unique properties, GFRP is widely applied in dozens of fields, including aerospace, automotive and rail transit systems, yacht and shipbuilding, sporting goods, household items, environmental sanitation engineering, building materials and bathroom fixtures, medical equipment, chemical industry, electrical industry and communication engineering, architectural decoration, landscape gardening, and so on. Xindaxin Company's GFRP products are primarily used in exterior wall decoration of buildings and landscape planters, among other applications.

Physical properties and testing standards