Group 1: Report Industry Investment Ratings - No industry investment ratings are provided in the report. Group 2: Core Views of the Report - For copper, the macro level shows a weakening signal, the fundamental contradiction is weak, and the domestic refined copper balance may shift from tight to neutral. Attention should be paid to the possible slight increase in inventory, which may suppress the absolute price [1]. - For aluminum, supply increases slightly, demand in May - June is not expected to decline significantly, there is still a supply - demand gap, and inventory is expected to decline gently from May to July. The fundamentals are acceptable, and attention should be paid to demand. The monthly positive spread can be held if the absolute price falls [1]. - For zinc, the zinc price fluctuates widely this week. The domestic social inventory accumulates slowly, and the inflection point of accelerated accumulation is expected to appear in early June. Attention should be paid to the node of inventory change from decline to accumulation, and short positions are recommended to be held. The domestic - foreign positive spread can be partially closed at an appropriate time [2]. - For nickel, the supply is at a high level, the demand is weak, the overseas nickel plate inventory accumulates slightly, and the domestic inventory remains stable. The opportunity to shrink the nickel - stainless steel price ratio can be continuously monitored [3]. - For stainless steel, the supply rebounds seasonally in April and some steel mills cut production passively in May. The demand is mainly for rigid needs. The fundamentals remain weak, and it is expected to fluctuate in the short term [3]. - For lead, the price fluctuates and declines this week. The supply is expected to decrease in May. It is expected to fluctuate in the range of 16400 - 16700 next week [6]. - For tin, affected by the overall low commodity sentiment and weak energy varieties, the tin price center moves down. In the short term, it is recommended to wait and see, and in the medium term, pay attention to short - selling opportunities [9]. - For industrial silicon, the overall supply and demand are in a tight - balance state currently, but there is large potential supply pressure in the future. In the long - term, the price is expected to bottom - out based on the cash - flow cost of leading manufacturers [12]. - For lithium carbonate, the price falls this week. In the short term, the downstream demand is weak, and the price is expected to decline after fluctuations next week. In the medium - long term, if the operating rate of leading mining - smelting integrated enterprises does not decline significantly, the price will still fluctuate weakly [14]. Group 3: Summary by Metals Copper - **Market Data**: From May 26 to May 30, the Shanghai copper spot price increased by 30, the waste - refined copper price difference increased by 101, and the LME inventory decreased by 2500 [1]. - **Market Situation**: Overseas, a large amount of Russian copper is extracted from LME warehouses, and the LME cash - 3M spread widens. Domestically, the cross - month spread and spot premium remain stable, and the downstream demand may weaken. The supply is affected by the shutdown of Kamora Copper Mine, which is expected to resume in the fourth quarter [1]. Aluminum - **Market Data**: From May 26 to May 30, the Shanghai aluminum ingot price decreased by 90, the domestic alumina price increased by 1, and the domestic social inventory decreased by 16856 [1]. - **Market Situation**: Supply increases slightly, demand in May - June is not expected to decline significantly, and there is still a supply - demand gap. Inventory is expected to decline gently from May to July [1]. Zinc - **Market Data**: From May 26 to May 30, the Shanghai zinc ingot price decreased by 60, the domestic social inventory remained unchanged, and the LME inventory decreased by 2225 [2]. - **Market Situation**: The zinc price fluctuates widely this week. The domestic TC rises, and the smelting output in June is expected to increase by 25,000 tons compared with May. The domestic demand elasticity is limited, and the overseas demand recovers slightly. The domestic social inventory accumulates slowly, and the LME inventory declines slightly [2]. Nickel - **Market Data**: From May 26 to May 30, the Shanghai nickel spot price increased by 550, the spot import return decreased by 874.57, and the LME inventory decreased by 762 [3]. - **Market Situation**: The pure nickel supply is at a high level, the demand is weak, the overseas nickel plate inventory accumulates slightly, and the domestic inventory remains stable [3]. Stainless Steel - **Market Data**: From May 26 to May 30, the prices of 304 cold - rolled coil, 304 hot - rolled coil, 201 cold - rolled coil, 430 cold - rolled coil, and waste stainless steel remained unchanged [3]. - **Market Situation**: The supply rebounds seasonally in April and some steel mills cut production passively in May. The demand is mainly for rigid needs, and the fundamentals remain weak [3]. Lead - **Market Data**: From May 26 to May 30, the spot premium decreased by 10, the Shanghai - Henan price difference remained unchanged, and the LME inventory decreased by 2375 [4]. - **Market Situation**: The price fluctuates and declines this week. The supply side has problems such as raw material shortage and low profit, and the demand side has high battery inventory and weak overall demand [6]. Tin - **Market Data**: From May 26 to May 30, the spot import return decreased by 1720.64, the spot export return increased by 2414.63, and the LME inventory remained unchanged [9]. - **Market Situation**: Affected by the overall low commodity sentiment and weak energy varieties, the tin price center moves down. The supply is affected by the situation in Myanmar, and the demand is limited by the slowdown of the electronics and photovoltaic industries [9]. Industrial Silicon - **Market Data**: From May 26 to May 30, the 421 Yunnan basis increased by 55, the 421 Sichuan basis decreased by 45, and the warehouse receipt quantity decreased by 615 [12]. - **Market Situation**: The overall market start - up rate increases slightly. The demand from the organic silicon industry increases slightly, but the overall demand is weak. The inventory is at a high level, and there is large potential supply pressure in the future [12]. Lithium Carbonate - **Market Data**: From May 26 to May 30, the SMM electric - grade lithium carbonate price decreased by 200, the SMM industrial - grade lithium carbonate price decreased by 200, and the warehouse receipt quantity decreased by 427 [14]. - **Market Situation**: The price falls this week. The downstream demand is weak, the supply side has production resumption and reduction situations, and the inventory accumulation speed slows down. In the short term, the price is expected to decline after fluctuations [14].