Njira yonse yopanga ma insulator amagetsi a Johnson

Njira yopangira kuyimitsidwa kwa porcelain insulator yopanga chomera imaphatikizapo ntchito zazikuluzikulu zotsatirazi:

Kupera → Kupanga dongo → Kugwetsa → Kuumba →Kuumitsa → Kuwala → Kuwotcha → Kuyesa → Chomaliza