S8·E4 – Deep Cycle Batteries, Tins, Optical Lenses
2007-01-23 • 21 min
This episode demonstrates the production processes for deep-cycle batteries, tins and optical lenses, and shows how each is made.
2007-01-23 • 21 min
This episode demonstrates the production processes for deep-cycle batteries, tins and optical lenses, and shows how each is made.
