每日期货全景复盘12.8：交割扩容撼动挺价联盟格局，多晶硅期货大幅下挫！

Group 1: Coking Coal Market - Coking coal continues to show weakness, reaching a new low in the current phase, with domestic coal production slightly contracting week-on-week [1] - High-frequency data indicates a decrease in mining activity, while import levels remain high, leading to sufficient supply [1] - Demand from coking enterprises is declining, with reduced purchasing enthusiasm and a drop in steel production, resulting in weakened real demand for coking coal [1] Group 2: Polysilicon Market - The photovoltaic market is experiencing an overall decline in demand, leading to increased sales pressure across various segments and early shutdowns for some companies [2] - The polysilicon inventory continues to rise, with a slight increase in warehouse receipts, indicating a supply-demand imbalance [2] - Despite a reduction in production across the supply chain, the weak demand is expected to lead to further inventory accumulation [2] Group 3: Rebar Market - The rebar market is under pressure due to weak demand and reduced production from steel mills, with a slight decline in apparent consumption [3] - Inventory levels are decreasing, but the overall supply-demand situation remains weak, with cost support for steel products lacking [3] - Recent declines in raw material prices have improved profitability for some steel mills, leading to expectations of increased rebar production in the future [3]