Unit:Dollar/ton
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    Latest price off LME     Spot/3-month premium and discount
Copper  7688.0/7690.0        -35        c
Aluminum  2319.0/2320.0      -31.5        c
Lead 2306.0/2308.0        -27        c
Zinc  2418.0/2419.0        -35        c
Tin 18850.0/18900.0       -70        c
Nickel 27090.0/27095.0       -60        c
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C stands for premium
B stands for discount