Futures variety code:
Dalian Commodity Exchange: soybean -A soybean meal -M soybean oil -Y corn -C LLDPE-L palm oil -PPVC-V coke -J coking coal-JM; ; Iron ore -I fiberboard-fb polypropylene-pp egg-jd rubber board-bb japonica rice-jr
Zhengzhou Commodity Exchange: Sugar -SRPTA-TA Cotton-CF Zhengmai-WH Pumai-PM Early Indica Rice-RI glass-FG Rapeseed Meal-RM Rapeseed-RS Vegetable Oil-OI Methanol-ME Power Coal-TC.
Shanghai Commodity Exchange: copper-copper-aluminum-aluminum-zinc-zinc-lead natural rubber-ruthenium fuel-rich gold-gold thread-wr rebar-rubidium-silver-silver hot rolled coil-HC asphalt-BU.