金属 库存总量 注销仓单 注销占百分比 铜 621,175 319,750 51.48% 铝 5,483,175 2,121,875 38.70% 铅 198,250 107,550 54.25% 锌 1,051,025 631,275 60.06% 锡 14,545 4,980 34.24% 镍 199,578 28,626 14.34%