最終更新日：2024/07/29
Diisocyanates are commonly used in the production of polyurethane foams.
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Diisocyanates are commonly used in the production of polyurethane foams.
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Diisocyanates are commonly used in the production of polyurethane foams.
Diisocyanates are commonly used in the production of polyurethane foams.
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