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  • PM 2.5 (particulate matter), small harmful dust sensor detects slightly particles level over safety threshold. bad air quality, urban environmental and health standard problem. Puzzle #320293898
PM 2.5 (particulate matter), small harmful dust sensor detects slightly particles level over safety threshold. bad air quality, urban environmental and health standard problem. puzzle #320293898

  • - 3 sizes: 48, 500 & 1,000 pieces
  • - Durable, glossy-coated paperboard
  • - Full-bleed, photo-quality printing
  • - Storage box included

$39.95

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