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The หัวเจียรไม้ Diaries

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The English Chemist Joseph Priestley gave it the identify rubber in 1770 when he observed it could be used to rub out pencil marks. Its big business achievement came only following the vulcanization procedure was invented by Charles Goodyear in 1839. Styrene Butadiene Rubber is easily the most utilised rubber Successfully Submitted (Awaiting Approval)
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