It is made of epoxy resin,and used for switchgears. wiring connector,insulation pole,insulating pole,earthing switch,grounding switch,tube,insulating tube,insulated tube,insulation tube,bushing tube,insulation tube,high voltage bushing,insulating bushing,insulating sleeving,contact box,contact head box,insulating contact box,contactor box,switchgear accessory. High voltage bushing assembly