Episode 4·January 27, 2001·21 min
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.
This episode demonstrates the production processes for hearing aids, 3-D puzzles, rubber mats and toilets, and shows how each is made.