1. The product was returned because it was defectively manufactured.
2. The machine was defectively designed, causing frequent breakdowns.
3. The car's brakes were defectively installed, posing a safety risk.
4. The phone's screen was defectively cracked upon arrival.
5. The software was defectively programmed, leading to constant glitches.
6. The furniture was defectively assembled, with parts missing.
7. The packaging was defectively sealed, causing the contents to spill out.
8. The clothing was defectively stitched, with loose threads hanging.
9. The medication was defectively labeled, causing confusion among patients.
10. The building was defectively constructed, with cracks appearing in the walls.