Isopropyl cawv tus nqi tau nce thiab poob rau lub lim tiam dhau los, nrog rau cov nqi nce siab. Tus nqi isopropanol hauv tsev yog 7,720 yuan / tuj rau hnub Friday, thiab tus nqi yog 7,750 yuan / tuj rau hnub Friday, nrog rau kev hloov kho tus nqi nce siab ntawm 0.39% hauv lub lis piam. Raw khoom acetone nqi nce, propylene nqi dow ...
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