以下为伦敦金属交易所(LME)12月21日基金属库存变化情况（单位：吨）
                                                            
                                                          金属   库存      增减     变动%
                                                          铜     201650   500     0.25
                                                          铝     1106025  -1950    -0.18
                                                          锌     188225   -1500    -0.79
                                                          镍     373410   -1524    -0.41
                                                          铅     141875   -125     -0.09
                                                          锡     2450     105     4.48
                                                          铝合金  13500    0       -