Electric porcelain bottles, typically assembled by bonding insulating components (such as porcelain pieces) 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 plants, and transformer stations' busbars, as well as external charged conductors of various electrical equipment, must be supported by insulators and insulated from the ground (or grounding objects) or other conductors with different potential differences.