Precast concrete and conveyor belt: what they have in common

1. Step 1. Precast concrete — is material for — Panel building. Panels.
2. Step 2. Panel building — has part — Elevator. Lifts.
3. Step 3. Elevator — has part — Pulley. The rope runs over a pulley.
4. Step 4. Pulley — is part of — Belt drive. The belt wraps around pulleys.
5. Step 5. Belt drive — is used in — Conveyor belt. The belt runs around the drive and tension drums.

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