Hollow composite insulators are primarily composed of three main components: fiberglass-reinforced epoxy resin winding tubes, silicone rubber sheds with creepage extension design, and connecting flanges. 

The epoxy fiberglass reinforced winding tube serves as the insulating inner component of the hollow composite insulator. It is manufactured by specialized winding machines through continuous filament winding of resin-preimpregnated non-alkali glass fiber, following a mechanical layering design, delivering exceptional mechanical strength and dielectric properties. Functioning as the external insulation of a hollow composite insulator, the silicone rubber weather sheds deliver critical electrical performance, including protection and designated creepage distance. The connecting flanges, produced through aluminum die-casting, deployed proprietary bonding technology to transmit mechanical loads while ensuring structural sealing for support and connection. Hollow composite insulators are suitable for use in 40.5kV to 550kV power systems, such as high-voltage electrical products including SF6 transformers, SF6 circuit breaker housings, surge arresters, high-voltage bushings, capacitor voltage dividers, and cable terminations.