Electric porcelain bottles, typically assembled by bonding insulating components (such as porcelain) with metal fittings (like steel legs, iron caps, flanges, etc.) using adhesive or mechanical clips. Insulators are widely used in power systems, generally serving as external insulation, operating under atmospheric conditions. Overhead transmission lines, generator stations, transformer stations, and external conductors of various electrical equipment all require insulators for support, ensuring they remain insulated from the ground (or grounding materials) or other conductors with differing potentials.