Carbon nanotube bundled multi-walled structures are widely used in various advanced applications due to their exceptional mechanical, electrical, and thermal properties. In electronics, they serve as conductive additives in composites, enhancing the performance of batteries, supercapacitors, and flexible displays. Their high strength and lightweight nature make them ideal for reinforcing materials in aerospace and automotive industries, improving durability and fuel efficiency. In energy storage, they are utilized in electrodes for lithium-ion batteries, offering higher conductivity and longer lifespan. Additionally, their thermal conductivity is leveraged in heat management systems for electronic devices, ensuring efficient heat dissipation. In biomedical fields, they are explored for drug delivery systems and biosensors due to their unique structural and functional characteristics.