How It's Made - Paving Asphalt; Marshmallow Cookies; Loudspeakers; Electronic Door Locks

Seizoen: 5 - Aflevering: 1 / 56 - Eerst uitgezonden: 07 september 2005 - Episode ID: 129227

This episode demonstrates the production processes for paving asphalt, marshmallow cookies, loudspeakers and electronic door locks, and shows how each is made.