每日期货全景复盘12.29：铂钯期货午盘大幅跳水，均封跌停板

Group 1: Platinum and Palladium Futures - The main contracts for platinum and palladium experienced significant declines, closing at a 10% drop, with prices at 634.35 CNY/gram and 494.10 CNY/gram respectively [1][4][5] - Market overheating was noted due to rapid price increases in silver, platinum, and palladium, leading to a decrease in the gold-silver and gold-platinum ratios, indicating accumulated risks [1][5] - Regulatory measures were implemented by the exchange to limit daily opening positions for non-futures company members to 500 contracts, reflecting concerns over market volatility [1][5] Group 2: Lithium Carbonate Futures - Lithium carbonate prices fell sharply, with a drop of 7.89%, reaching 118,820 CNY/ton, and the market is approaching a traditional off-peak demand season [2][6] - Several industry updates were highlighted, including adjustments in pricing mechanisms and production cuts from various companies, which may impact supply dynamics [2][6][7] - The market is characterized by intense short-term speculation, with low inventory levels providing some support despite the anticipated demand slowdown [2][7] Group 3: Iron Ore Futures - Iron ore futures showed strong performance, with a 2.58% increase, and prices briefly surpassed the 800 CNY/ton mark, driven by unexpected demand from downstream sectors [3][8] - Supply remains high, but the market is experiencing a balance between production cuts and demand, with expectations of a potential bottoming out in steel production as the year ends [3][8] - Market sentiment is improving, leading to a short-term rebound in iron ore prices, although inventory levels are rising, which may exert downward pressure [3][8]