白银大跌5%，失守77美元关口，上期所连发多条公告

Group 1 - The core viewpoint of the news is that both gold and silver prices have experienced significant declines, with silver dropping over 5% and gold falling more than 1% as of January 7 [1] - The Shanghai Futures Exchange issued multiple announcements regarding the volatility of metal prices due to complex international situations [3][4] - The exchange has adjusted trading limits for silver futures contracts, setting a maximum daily opening position of 7,000 lots for non-futures company members and certain foreign participants starting January 9, 2026 [6] Group 2 - The trading margin ratios and price fluctuation limits for silver futures contracts have been revised, with the new limits set to take effect on January 9, 2026 [8] - The adjusted fluctuation limits for silver futures contracts AG2601, AG2602, AG2603, and AG2604 are now 16%, with the margin for hedging transactions set at 17% and for general positions at 18% [9] - The transaction fee rates for various trading activities related to silver futures contracts have also been specified, indicating a structured fee system for different types of trades [10]