商品日报（12月22日）：集运欧线盘中飙升超10% 金银铂钯携手再创新高

Group 1 - The domestic commodity futures market saw a majority of gains on December 22, with the shipping index (European line) leading the rise with an increase of over 8% [1][2] - Precious metals such as palladium and platinum reached their daily limit with increases of 7.00% and 6.99% respectively, while silver rose over 6% [1][3] - The shipping index's strong performance was supported by market expectations for the upcoming peak season, despite uncertainties regarding shipping routes in the Red Sea and Suez Canal [2][3] Group 2 - The silver, platinum, and palladium markets have shown remarkable performance, with silver prices hitting historical highs and the three metals collectively surging on December 22 [3] - Supply constraints and macroeconomic easing policies are significant factors supporting the continued strength of precious metals [3] - The polyester chain commodities also experienced significant gains, with PTA rising over 4.5% and other related products increasing by more than 3% [4] Group 3 - In contrast, the plastic market faced its fifth consecutive day of decline, driven by a supply-demand imbalance and decreasing downstream operating rates [5] - The main contract for polysilicon also saw a drop of over 2%, attributed to weak terminal demand and high inventory levels [5]