本周铜库存增加550吨，铝库存减少2749吨

Group 1 - The core point of the article highlights the changes in metal and rubber inventories on the Shanghai Futures Exchange for the week of October 17, with copper inventory increasing by 550 tons, aluminum decreasing by 2,749 tons, zinc increasing by 2,677 tons, lead increasing by 1,785 tons, nickel increasing by 1,300 tons, tin decreasing by 188 tons, and natural rubber decreasing by 7,282 tons [1] Group 2 - Copper inventory saw an increase of 550 tons [1] - Aluminum inventory experienced a significant decrease of 2,749 tons [1] - Zinc inventory increased by 2,677 tons [1] - Lead inventory rose by 1,785 tons [1] - Nickel inventory increased by 1,300 tons [1] - Tin inventory decreased by 188 tons [1] - Natural rubber inventory saw a notable decrease of 7,282 tons [1]