Spiral cable is a straight wire cable made of one or several groups of insulated wires twisted together, twisted on a metal mandrel to form a spiral state, and then cooled in a drying room for 30 to 120 minutes after heat treatment and shaping. The cooling method can be air cooling or water cooling. The cable that comes out in this way is in a spiral state and can be retracted (the time is determined by the temperature and the sheath material). 1. PVC spiral cable: high economy, low mechanical and chemical resistance. Medium elasticity. Suitable for installation and use in light industry, computers and other occasions. 2. PUR spiral cable: very good elasticity. It has excellent mechanical and chemical properties, especially cold resistance, oil resistance, weather resistance, wear resistance and tear resistance. It is suitable for use in mechanical manufacturing, power tools and other occasions. It is the best solution in most application fields. 3. PUR shielded spiral cable: has excellent chemical properti