Insulators prevent electricity from escaping wires and are used in two areas: Power Insulators: Found on electric poles and grids, they come in shapes like pin, rod, and hanging, and are made for different voltages from 10KV to ultra-high voltage. They're key for keeping electricity flowing where it should in power systems.
Railway Insulators: These are used in train systems and come in two types for supporting electrical wires above tracks.
Making Insulators: Machines like the ZHBH series (300/500/650/1300/2400T) with a cold runner injection method are used to make them efficiently.