Carbon nanotube bundled multi-walled structures are widely utilized in various advanced technological applications due to their exceptional mechanical, electrical, and thermal properties. In electronics, they are employed as conductive additives in composite materials to enhance the conductivity of polymers, enabling the development of lightweight and flexible electronic components. They are also used in the fabrication of field-effect transistors, sensors, and interconnects due to their high electron mobility and stability. In energy storage, these nanotubes serve as key components in supercapacitors and lithium-ion batteries, improving charge storage capacity and electrode performance. Their high surface area and conductivity make them ideal for enhancing energy efficiency and longevity in these devices. In materials science, they are incorporated into polymers, ceramics, and metals to create composites with superior strength, durability, and thermal conductivity. These composites are used in aerospace, automotive, and construction industries for lightweight yet robust structural materials. Additionally, their unique properties make them suitable for applications in environmental remediation, such as water filtration and gas adsorption, where their high surface area and chemical stability are advantageous for capturing contaminants. Overall, carbon nanotube bundled multi-walled structures play a critical role in advancing technology across multiple sectors, offering innovative solutions to complex engineering challenges.