32 Season
416 Episode
How It's Made - Season 1 Episode 4 Hearing Aids, 3-D Puzzles, Rubber Mats, Toilets
This episode demonstrates the production processes for hearing aids, 3-D puzzles, rubber mats and toilets, and shows how each is made.
- Year : 2019
- Country : Canada, United States of America, United Kingdom
- Genre : Documentary
- Studio : Discovery, Science
- Keyword : factory, manufacturing
- Director : Gabriel Hoss
- Cast :