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 correction tape, the office supply that lets people fix mistakes made in pen. In the second half: water filter media that's used in 80% of Japan's water treatment facilities.
Bessho Naoya, currently involved in the development of correction tape
The company's first correction tape
Saito Yasuhiro, giving an explanation about water filter media