What are the trading varieties of major futures exchanges?
Shanghai copper, Shanghai aluminum, Shanghai zinc, Shanghai lead, gold, silver, thread, rubber, asphalt, hot coil, Shanghai nickel, hot coil, Shanghai tin, fuel oil, paper pulp, eggs, palm oil, coke, soybean meal, soybean oil, coking coal, iron ore, corn, PVC, PP, ethylene glycol, ferrosilicon, manganese silicon and apples.