铝锭：成本端受消息面提振，铝价暂偏强震荡，成材：重心下移偏弱运行

Report Summary 1) Report Industry Investment Rating No specific industry investment rating is provided in the report. 2) Report's Core View - For building materials, the price is expected to move in a volatile and consolidating manner, with its center of gravity shifting downward and showing a weak performance [1][2]. - For aluminum ingots, the price is expected to fluctuate strongly in the short - term range, and attention should be paid to macro - sentiment and downstream start - up [3]. 3) Summary According to Relevant Content Building Materials - Production Impact: Yunnan - Guizhou short - process construction steel enterprises' shutdown during the Spring Festival is expected to affect 741,000 tons of building steel production. In Anhui, 6 short - process steel mills have different shutdown schedules, with a daily production impact of about 16,200 tons during shutdown [1][2]. - Market Transaction Data: From December 30, 2024, to January 5, 2025, the total transaction area of new commercial housing in 10 key cities was 2.234 million square meters, a 40.3% decrease from the previous period and a 43.2% increase year - on - year [2]. - Price Trend: Building materials continued to oscillate downward yesterday, reaching a new low. In the context of weak supply and demand and pessimistic market sentiment, the price center has been continuously shifting downward, and this year's winter storage is sluggish, providing little price support [2]. Aluminum Ingots - Alumina Situation: Last week, southern alumina enterprises had concentrated maintenance and production cuts, with the operating capacity decreasing by 2.9 million tons/year compared to the previous period. Alumina enterprises have been facing losses, and the spot price has continued to rebound due to tightened supply and strong price - holding intentions [2]. - Bauxite Event: The revocation of some mining rights in Guinea has affected the supply of bauxite. The specific impact needs to be evaluated, and it may provide short - term emotional support to the cost of alumina [2][3]. - Inventory Status: On May 19, the inventory of electrolytic aluminum ingots in major domestic consumption areas was 585,000 tons, an increase of 4,000 tons from last Thursday and a decrease of 16,000 tons from last Monday. The subsequent inventory trend depends on the matching of downstream export order restocking demand and incoming goods [2].