Answer: While both are a type of transmission line, they serve fundamentally different purposes. A coaxial transmission line is primarily designed to transmit high-frequency electrical signals, such as those for television, radio, or data, with minimal signal loss and interference. Its unique construction, with a central conductor surrounded by a grounded shield, confines the electromagnetic field and prevents external interference. In contrast, the overhead transmission line (OHTL) conductors manufactured by Ningbo Changshi are designed for the large-scale transmission of low-frequency (typically 50-60 Hz) electrical power. Our conductors are built for robust mechanical strength and high current capacity over long distances, with no internal shielding. We manufacture the specialized tension stringing equipment and tools required to safely and efficiently install these high-voltage power conductors.