3679| 13
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什么聚氨酯可以在低溫-30℃保持彈性 |
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點(diǎn)評(píng)
對(duì)啊,我以前就遇到過(guò),出口老毛的,那邊要求是-50度能正常用
為啥找俄羅斯呢,因?yàn)樗麄兡潜容^冷嗎
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點(diǎn)評(píng)
行不行到時(shí)候反饋下。
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