美伊核谈判进展牵动油价，OPEC+即将审议4月增产计划，下游企业紧急提示原材料波动风险

Group 1 - International crude oil futures prices experienced slight declines, with WTI crude oil for April settling at $65.21 per barrel, down 0.32%, and Brent crude oil for April at $70.75 per barrel, down 0.14% [1] - The fluctuations in oil prices are closely related to the progress of US-Iran nuclear negotiations, with reports indicating that both parties made progress during the third round of talks in Geneva [1] - Saudi Arabia has developed an emergency plan to increase short-term oil production and exports if US military actions against Iran disrupt oil transport in the Middle East [1] Group 2 - Shanghai Securities reported that the geopolitical tensions between the US and Iran have led to significant increases in international oil prices [2] - The report from招商证券 highlighted that prices for upstream resources, including metals, crude oil, and most chemical products, have been rising recently, recommending a focus on sectors like oil and petrochemicals [2] - 东材科技 issued a notice regarding abnormal stock trading, indicating that fluctuations in raw material prices, closely linked to international oil prices, could impact the stability of the company's operating performance [2]