Harms of static electricity in production: Films, bottles and jars are adhered to dust, products do not line up. Or cause sparks leading to fire and explosion. The ink is smudged (crow's feet, beard pulling...). The amount of waste increases due to static electricity causing position deviation when machining.

The cast iron casters can withstand high temperatures and exposure to water or the environment. They will rust over time. Cast iron wheels can also withstand exposure to chemicals, grease and oils.