Fourdrinier wire table and headphones: what they have in common

1. Step 1. Fourdrinier wire table — is part of — Paper machine. An endless mesh forms the web.
2. Step 2. Paper machine — is used in — Paper. Industrial production.
3. Step 3. Paper — is material for — Loudspeaker. The cone is paper.
4. Step 4. Loudspeaker — is part of — Headphones. Miniature drivers.

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