金属 库存总量 注销仓单 注销占百分比 铜 333,575 56,800 17.03% 铝 3,913,725 2,126,575 54.34% 铅 228,700 18,625 8.14% 锌 537,775 147,725 27.47% 锡 10,560 935 8.85% 镍 430,146 119,238 27.72%