Insulator is the special part to fix,install and insulat on communication, electric power, lightning protection, machinery, medical, wind energy, frequency conversion equipment,new energy vehicles (integrated chassis cabinets, locker, etc.) to provide meet the fixed support, installation and insulation isolation effect of special parts, it is also known as insulators, insulation column .Its appearance is usually the cylinder,hexagonal,round.There is the insert on the two surface of insulator