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<p>[QUOTE=&quot;GDJMSP, post: 1793617, member: 112&quot;]Question for you, where have you ever seen this advertisement that slabs are airtight being made ? And by whom ?</p><p>&nbsp;</p><p>I ask because I&#039;ll readily agree with you that there seem to be a lot of people who &quot;think&quot; slabs are airtight. But I have never seen any advertisement or claim made by the TPGs - other than the one I previously mentioned above regarding NGC&#039;s discontinued slab - that their slabs are airtight.[/QUOTE]</p><p><br /></p>

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