the london metal exchange (lme) announced that the margin for tin will be lowered from us$3,505/ton to us$3,478/ton, the margin for nickel will be lowered from us$4,983/ton to us$4,509/ton, and the margin for lead will be lowered from us$175/ton. the us dollar/ton is lowered to us$152/ton, effective after the market closes on july 19, 2023.
