["수분 없는 에탄올 중 불순 알코올
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우리 회사가 구매한 수분 없는 에탄올에 불순물인 메탄올,1ppm, 프로올,ppm, 이프로올异丙醇 ppm杂质存在，，影响产品纯度，丙醇异丙 barcelona 这种杂质是来自于粮食发酵吗？有其他工艺生产的不含有丙醇异丙醇的无水乙醇吗？
좋아 보이는데도 불구하고 메탄올과 이프로올은 항상 존재할 것 같습니다。好好像都会有丙醇和异丙 barcelona 这去
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