螺纹钢：原料冬储和复产预期叠加，钢厂利润预计压缩，热轧卷板：原料冬储和复产预期叠加，钢厂利润预计压缩

1. Report Industry Investment Rating - No relevant information provided 2. Core Viewpoints - For both rebar and hot-rolled coil, the combination of raw material winter storage and production resumption expectations is likely to compress steel mill profits [1] 3. Summary by Relevant Catalogs 3.1 Fundamental Tracking - Futures prices: RB2605 closed at 3,104 yuan/ton, down 23 yuan/ton (-0.74%); HC2605 closed at 3,248 yuan/ton, down 26 yuan/ton (-0.79%) [1] - Trading volume and positions: RB2605 had a trading volume of 697,016 lots and a position of 1,548,351 lots, with an increase of 43,067 lots; HC2605 had a trading volume of 391,613 lots and a position of 1,294,526 lots, with an increase of 26,969 lots [1] - Spot prices: Rebar prices in Shanghai, Hangzhou, Beijing decreased by 10 yuan/ton, while the price in Guangzhou remained unchanged; hot-rolled coil prices in Shanghai, Hangzhou, Tianjin, and Guangzhou decreased by 10 - 20 yuan/ton, and the price of Tangshan billet remained unchanged [1] - Basis and spreads: The basis of RB2605 increased by 8 yuan/ton to 186 yuan/ton, and the basis of HC2605 increased by 2 yuan/ton to 2 yuan/ton; various spreads showed different changes [1] 3.2 Macro and Industry News - Steel production and inventory data: On December 31, steel output increased (rebar +3.83 tons, hot-rolled coil +10.97 tons, five major varieties +18.36 tons), total inventory decreased (rebar -12.22 tons, hot-rolled coil -6.26 tons, five major varieties -25.84 tons), and apparent demand changed (rebar -2.24 tons, hot-rolled coil +3.73 tons, total +7.41 tons) [3] - Production of key steel enterprises: In mid-December 2025, the average daily output of key steel enterprises decreased (crude steel -1.3%, pig iron -1.9%, steel -1.4%); the steel inventory of key enterprises increased by 8.6% compared to the previous ten-day period [3] - Policy: The Ministry of Commerce and the General Administration of Customs will implement export license management for some steel products [3] - Social inventory: In mid-November, the social inventory of five major steel products in 21 cities decreased by 2.5% month-on-month [3] - Steel imports: In October 2025, China imported 50.3 tons of steel, a decrease of 8.2% month-on-month; from January to October, the cumulative import volume decreased by 11.9% year-on-year [3] 3.3 Trend Intensity - The trend intensity of rebar and hot-rolled coil is 0, indicating a neutral trend [4]