From Bloomie:
China’s commodity exchanges stepped up efforts to curb speculation in trading in everything from steel to iron ore and coking coal after prices soared amid a credit-fueled binge. Futures slumped on Wednesday.
Bourses in Dalian, Shanghai and Zhengzhou have announced further measures, including higher fees and a reduction in night hours, adding to a raft of moves this month that have made it more expensive for investors to trade.