lme announcement: the margin for copper will be lowered from us$680/ton to us$634/ton
the london metal exchange (lme) announced that the margin for copper will be lowered from us$680/ton to us$634/ton, the margin for tin will be raised from us$3,443/ton to us$3,505/ton, and the margin for nickel will be raised from us$5,301 the us dollar/ton was lowered to 4983 us dollars/ton.
