Megafactories lifts the lid on how millions of your everyday products and iconic designs begin life on the assembly line.
From bottles of beer to to the latest video games to souped-up supercars, follow every cog and conveyor belt of these fascinating production processes as you enter some of the planet's most impressive factories.
Wednesday 21 January at 4:00PM - National Geographic Channel
Saturday 24 January at 12:00PM - National Geographic Channel
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Strictly necessary and performance