金属 库存总量 注销仓单 注销占百分比 铜 347,850 85,600 24.61% 铝 2,109,425 849,525 40.27% 锌 456,800 34,625 7.58% 镍 360,540 118,206 32.79% 锡 3,370 1,940 57.57% 铅 189,950 29,975 15.78% 铝合金 13,680 20 0.15%