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New Step By Step Map For หัวเจียรยาง

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The English Chemist Joseph Priestley gave it the identify rubber in 1770 when he identified it may be accustomed to rub out pencil marks. Its significant commercial achievements arrived only after the vulcanization process was invented by Charles Goodyear in 1839. Styrene Butadiene Rubber is the most employed rubber and Successfully Submitted (Awaiting Approval)
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