金属 库存总量 注销仓单 注销占百分比 铜 151,725 48,125 31.72% 铝 2,529,100 1,132,000 44.76% 锌 380,700 27,525 7.23% 镍 401,766 129,954 32.35% 锡 7,195 1,480 20.57% 铅 185,475 73,700 39.74% 铝合金 14,400 580 4.03%