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Materials
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MIRA 32 oz Stainless Steel Insulated Sports Water Bottle - Hydro Metal Thermos Flask Keeps Cold for 24 Hours, Hot for 12 Hours - BPA-Free Spout Lid Cap - Iris - Walmart.com
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vacuum flask or Thermo flask fully diagram vector illustration 21669354 Vector Art at Vecteezy
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Draw a labelled diagram of a thermos flask Describe its working
What makes glass the only material that is used in thermo flasks? - Quora
