Core Viewpoint - The commodity market sentiment has significantly declined, with major declines observed in various popular products, particularly in the black series and photovoltaic industry chain products [1][2]. Group 1: Commodity Market Overview - On July 31, domestic futures opened lower, with many popular products experiencing declines exceeding 5%, including焦煤 (coking coal), 玻璃 (glass), and 纯碱 (soda ash) [1][2]. - The 文华商品指数 (Wenhua Commodity Index) fell nearly 1.5% in the morning session, with significant drops in焦煤 (coking coal), 玻璃 (glass), and other black series products [2]. - By the afternoon, the index dropped over 2%, with glass and silicon iron hitting their daily limit down [2]. Group 2: Black Series Products -焦煤 (coking coal) saw its main contract hit the limit down, closing at 1045.5 yuan/ton, while other black series products like焦炭 (coke) and螺纹钢 (rebar) also experienced significant declines of 4.93% and 4.19%, respectively [2]. - The supply side for焦煤 (coking coal) is stabilizing, with upstream coal mine inventories returning to reasonable levels and production recovering [3]. Group 3: Photovoltaic Industry Chain - The three major products in the photovoltaic industry chain, including碳酸锂 (lithium carbonate), 工业硅 (industrial silicon), and 多晶硅 (polysilicon), experienced deep corrections, with declines of 6% and more [4]. - By the end of trading,多晶硅 (polysilicon) fell 7.81% to 49,130 yuan/ton, while industrial silicon and lithium carbonate also saw significant drops [4]. - The overall production of多晶硅 (polysilicon) is expected to approach 110,000 tons, with a significant increase anticipated in August [4]. Group 4: Market Sentiment and Future Outlook - The recent decline in market sentiment is attributed to the "anti-involution" policy and macroeconomic factors, with investors awaiting further policy guidance [2][5]. - The market is expected to maintain a wide range of fluctuations, with cautious trading strategies recommended for多晶硅 (polysilicon) and碳酸锂 (lithium carbonate) due to ongoing pressures in the supply-demand balance [5][6]. - Regulatory measures have been implemented to limit speculative trading in industrial silicon, polysilicon, and lithium carbonate, which may help mitigate market risks [5][6].