Japan's Top Inventions - Season 5 Episode 13

Japan's Top Inventions - Season 5 Episode 13 - Documentary TV Shows 26:14. story about The fascinating stories and secrets behind hit Japanese products, plus parts and machines that boast the top share of niche markets. In the first half: the story behind lithium-ion batteries, a key part of smartphones, laptops and electric vehicles. In the second half: dust collectors for tunnel construction, which help keep workers safe at worksites around the world.