金属 库存总量 注销仓单 注销占百分比 铜 293,150 167,925 57.28% 铝 5,363,175 2,484,600 46.33% 铅 202,925 35,025 17.26% 锌 798,575 220,600 27.62% 锡 8,725 3,970 45.50% 镍 269,388 113,250 42.04%