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0.4mm~4mm Thick Clear Plastic PVC Sheet Hard Plastic Plate Multi size available | eBay
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Amazon.com: (10 Pack) Blue Corrugated Plastic 18" x 24" 4mm Blank Sign Sheets Coroplast - Horizontal : Industrial & Scientific
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Corrugated Plastic Sheeting, 4mm Fluted, 48"x96", White
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