金属 库存总量 注销仓单 注销占百分比 铜 310,300 60,250 19,42% 铝 3,597,700 1,615,975 44.92% 锌 464,950 78,000 16.78% 镍 458,148 149,580 32.65% 锡 6,810 1,135 16.67% 铅 176,450 17,025 9.65% 铝合金 14,480 1,480 10.22%