Dalian Commodity Exchange: Soybean -A soybean meal -M soybean oil -Y corn -C LLDPE-L palm oil-P.
Zhengzhou commodity exchange: sugar -SRPTA-TA cotton-CF strong wheat-WS rice er.
Shanghai Commodity Exchange: copper-copper aluminum-aluminum-zinc-zinc natural rubber-ruthenium fuel-rich gold-gold wire-WR rebar-rubidium.