Subject: lower ethylene chem. lower ethylen = lower ethylene content grade????Выражение встречается в следующем контексте: The size of this demand has encouraged many companies to examine world-scale chlor-alkali complexes in Australia over the decades, but to date issues such as the limited size of chlorine demand, insufficiently attractive power costs, and a lack of lower ethylene have meant that none have succeeded. Заранее всем спасибо за помощь
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