Carbon nanotube bundled multi-walled are widely used in electronics and electrical applications due to their excellent conductivity and mechanical strength. They are incorporated into conductive films, sensors, and transistors, enhancing performance and durability. In energy storage, they serve as key components in batteries and supercapacitors, improving charge capacity and efficiency. They are also utilized in photovoltaic devices, such as solar cells, to boost energy conversion efficiency. Their high surface area and thermal conductivity make them ideal for use in thermal management systems, such as heat sinks and thermal interface materials. Additionally, they are employed in composite materials to reinforce polymers, metals, and ceramics, providing lightweight yet robust solutions for aerospace, automotive, and construction industries. Their unique properties enable applications in biomedical fields, including targeted drug delivery and biomedical devices, owing to their biocompatibility and nanoscale size. Their unique properties also enable applications in environmental technologies, such as water filtration, air purification, and gas adsorption systems.