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Western developed countries have been continuously expanding the application areas of high-end high-performance resins and engineering plastics such as polyarylether and polyamide. For example, polyetheretherketone (PEEK) has excellent high-temperature resistance, corrosion resistance, wear resistance, and other properties, and is widely used in aerospace, biomedicine, robotics, and other fields. Boeing's B757 civil airliner uses glass fiber and PEEK composite to prepare the engine fairing by injection molding. The material has the characteristics of resistance to harsh conditions (high humidity, ultrasonic vibration, high flow rate), the weight is about 30% lighter than metal products, and the price is about 90% lower. In the field of implantable medical devices, spinal fusion devices, knee and hip replacement parts, bone plates and intramedullary nails, craniomaxillofacial, implants and other products have been developed one after another, becoming the most widely used biomedical non-metallic materials. In emerging fields such as robotics, PEEK materials also show good application potential because they meet the requirements of high strength and lightweight. In 2023, Tesla Motors demonstrated the Optimus Gen 2 humanoid robot, which uses PEEK composite materials to reduce weight by 10 kg without affecting performance and walks 30% faster than before.

In recent years, developed countries have competed to develop new high-performance resins such as polyarylethersulfone and polyaryletherketone with higher heat resistance and excellent processing performance. DuPont of the United States and BASF of Germany have made corresponding technical improvements to PEEK and developed polyetherketone (PEK) and polyetherketoneketone (PEKK) products with higher heat resistance, but the above high-performance resins have not solved the problems of difficult dissolution, difficult processing, and high cost. At present, the most widely used high-performance resins in the world are still polyetheretherketone, polyethersulfone, etc., and the use temperature is below 240 degrees Celsius, and when the use temperature exceeds its glass transition temperature, the mechanical properties will drop significantly.