PEEK ultra-pure particles are suitable for special cable manufacturing. Features: High temperature resistance, long-term use temperature is 250-260°C, and instantaneous use temperature can reach 280°C. Chemical resistance, basically resistant to most acids except concentrated sulfuric acid. Stability, it can still maintain high wear resistance and high insulation performance at 250-260℃. It has very high mechanical and scientific properties, good toughness, rigidity and dimensional stability. It has a small linear expansion coefficient, close to that of metallic aluminum materials. It also has high fatigue resistance that metal materials lack. It has excellent radiation resistance, peeling resistance, impact resistance, creep resistance and hydrolysis resistance. Application areas: special cables (aviation ultra-high temperature wires, petroleum industry submersible pump motor winding wires and connecting wires, winding coils of nuclear island drive mechanisms, PEEK insulated wires, etc.)