Graphitized multi-walled carbon nanotubes are widely used in electronics for their excellent electrical conductivity. They are incorporated into conductive films, sensors, and transistors to enhance performance. In energy storage, they serve as additives in lithium-ion batteries and supercapacitors, improving electrode conductivity and stability. In composite materials, they reinforce polymers, metals, and ceramics, providing increased strength, durability, and lightweight properties. These composites are used in aerospace, automotive, and sports equipment. They also play a role in catalysis, acting as supports for metal nanoparticles in chemical reactions. Additionally, they are utilized in environmental applications, such as water filtration and gas adsorption, due to their high surface area and adsorption capacity. In biomedical fields, they are explored for drug delivery systems and biosensors, leveraging their unique structural and functional properties.