氧化铝连续主力合约日内跌2%

Group 1 - The core point of the article is that the main contract for alumina has experienced a decline of 2% in a single day, currently priced at 2732.00 yuan [1] Group 2 - The report indicates that the decline in alumina prices may reflect broader market trends or specific supply-demand dynamics within the industry [1] - The article is published by a financial news outlet, suggesting that the information is relevant for investors and stakeholders in the alumina market [1]