Electrical properties refer to the behavior that materials and components exhibit in response to electric current and electric fields, including conductivity, insulation, dielectric properties, and semiconductor characteristics. These are extremely important factors that determine the function and performance of all electrical and electronic products, such as electronic components, semiconductor devices, sensors, and wiring materials. In manufacturing, precise control of these properties is required. Representative processing methods include carrier concentration control through doping in semiconductor manufacturing, dielectric constant adjustment through sintering or thin film formation of dielectric materials, improvement of conductivity through plating or surface treatment of metal materials, and ensuring dielectric strength through molding or coating of insulating materials. Advanced expertise and technology are indispensable, from material selection to optimization of process conditions.