1. Ordinary needle insulator: Ordinary needle insulator is made of ceramic and steel materials bonded together with adhesive, with a layer of enamel on the surface to improve insulation performance;

2. Lightning protection needle insulator: This lightning protection needle insulator has a patented puncture type structure, which can make electrical connections appear on the insulation layer of the wires in the cable tray. In normal conditions, insulators do not have a discharge gap. When lightning exceeds the voltage, it can break through the gap between the arcing fork and the grounding electrode, forming a short-circuit channel. Release overvoltage energy to protect wires.