Magnesium Hydroxide (Mg(OH)₂) is widely known as an inorganic flame retardant material, but it also possesses excellent thermal conductivity and electrical insulation properties, making it highly useful as a filler for thermal interface materials (TIMs). It is particularly suitable for applications such as electronic materials, batteries, and power modules, where improved thermal conductivity and electrical insulation are simultaneously required. Additionally, Mg(OH)₂ is non-toxic and environmentally friendly, leading to increasing demand in the electronics and electrical industries where regulatory standards are becoming stricter. Through particle design and surface treatment, its dispersibility in resins can be enhanced, and its superior thermal stability makes it ideal for products that require long term reliability.