旺季不旺与成本支撑并存，盘面预计震荡

1. Report Industry Investment Rating - The investment rating for cast aluminum alloy is "Oscillation" [1] 2. Core Viewpoints of the Report - The coexistence of the off - peak season during the supposed peak period and cost support is expected to lead to an oscillatory trend in the market. The price of remelted aluminum alloy ingots showed a weak and oscillatory performance last week. Macroeconomic factors, cost, and inventory conditions will jointly affect the price trend of ADC12, with the price expected to oscillate. One - sided trading can consider lightly - weighted long positions on dips, and the existing arbitrage positions can be held with appropriate stop - profit settings [1][2][3] 3. Summary According to the Table of Contents 3.1. 1. Waste Aluminum: Arrival Marginally Recovers but Remains Low, Price Oscillates at High Levels - Last week (09/15 - 09/19), the price of remelted aluminum alloy ingots oscillated weakly. The closing price of AD2511 decreased by 1.6% week - on - week to 20,325 yuan/ton, and the sales price of Baotai Group's ADC12 dropped by 200 yuan/ton to 20,400 yuan/ton. The price of waste aluminum in Guangdong decreased by 100 yuan/ton week - on - week, while the FOB price of Malaysian crushed primary aluminum increased by 33 US dollars to 2,233 US dollars/ton. The production cost of Fubao's ADC12 decreased by 113.3 yuan/ton to 20,226 yuan/ton, and the profit widened by 13.2 yuan/ton to 73.8 yuan/ton [12][13] - This week, waste aluminum prices remained high but declined week - on - week, mainly driven by the weakening of primary aluminum prices. The supply shortage of waste aluminum persists, especially for crushed primary aluminum. The operating rate of leading recycled aluminum enterprises continued to rise, but the peak - season expectations are difficult to fulfill, and the continuous increase in the operating rate may not be sustainable. The supply - demand game of waste aluminum will remain intense, and the price is expected to oscillate at high levels in the short term [15] 3.2. 2. Recent Industry News Review - In July 2025, the global primary aluminum supply was short of 11.99 tons, and from January to July 2025, the supply shortage was 98.53 tons [18] - In August, the PMI of the aluminum processing industry was 53.3%, showing an improvement from the off - season to the peak season. Primary alloys expanded steadily, while recycled alloys were still below the boom - bust line [19] - In July 2025, China's waste aluminum imports increased by 18.7% year - on - year, with Thailand and Japan being the major suppliers [19] - Four ministries and commissions jointly issued a notice to regulate investment promotion behaviors, including rectifying illegal fiscal rebates and subsidies [19][20] - The US expanded the scope of a 50% tariff on steel and aluminum imports, including hundreds of derivative products [20] 3.3. 3. Key High - Frequency Data Monitoring of the Industrial Chain 3.3.1. 3.1 Waste Aluminum: Arrival Marginally Recovers, Price Remains High - This week, waste aluminum prices remained high but declined week - on - week, mainly due to the weakening of primary aluminum prices. The supply shortage of waste aluminum persists, especially for crushed primary aluminum. The operating rate of leading recycled aluminum enterprises continued to rise, but the peak - season expectations are difficult to fulfill, and the continuous increase in the operating rate may not be sustainable. The supply - demand game of waste aluminum will remain intense, and the price is expected to oscillate at high levels in the short term [15] 3.3.2. 3.2 ADC12: Price is Strong, Social Inventory is High - The price of cast aluminum alloy futures oscillated weakly this week, with a 1.6% decline. The sales price of Baotai's ADC12 decreased by 200 yuan/ton to 20,400 yuan/ton. The ADC12 - A00 spread marginally narrowed. After entering the traditional peak season, the market performance was below expectations, and the social inventory of ADC12 continued to rise. The production of standard warehouse receipts for cast aluminum alloy futures will start on September 22nd. The pre - holiday inventory - building demand is expected to provide short - term support for the spot price, and the trading activity of ADC12 in the trading segment increased this week due to the strengthening of the basis. The social inventory of aluminum alloy ingots continued to rise to 7.14 tons, and the factory - level inventory increased by 0.03 tons to 6.08 tons [16] 3.3.3. 3.3 Downstream: Peak - Season Expectations are Difficult to Fulfill - The high - frequency data of new - energy vehicles showed signs of weakening, and the peak - season expectations for the downstream industry are difficult to fulfill. The production and sales data of the automotive and motorcycle industries are presented in the report, reflecting the current situation of the downstream demand [2][60][66]