金属 库存总量 注销仓单 注销占百分比 铜 502,750 252,800 50.28% 铝 5,340,900 1,929,325 36.12% 铅 233,025 56,000 24.03% 锌 1,060,475 553,200 52.17% 锡 12,780 2,750 21.52% 镍 228,264 52,896 23.17%