整理：每日全球大宗商品市场要闻速递（5月19日）

Group 1 - The London Metal Exchange (LME) plans to set position limits to curb excessive holdings [1] - Emirates Global Aluminium is advancing plans to build its first new primary aluminium production plant in the United States [1] - Goldman Sachs maintains a cautious outlook on oil prices, citing potential pressure from increased Iranian supply [1] Group 2 - Iranian Foreign Minister states that uranium enrichment activities will continue regardless of any agreements reached [1] - The Iranian President warns Western countries of the consequences of interrupting oil supplies, suggesting they would face paralysis [1] - Turkey has discovered natural gas in the Black Sea valued at $30 billion [1] Group 3 - The CEO of Abu Dhabi National Oil Company indicates that the UAE and the US plan to invest $440 billion in the energy sector by 2035 [1] - According to trade sources, Angola is set to load 33 oil tankers in July, down from 34 in June [1]