Dalian Commodity Exchange will launch polyvinyl chloride (PVC) futures next month, after the China Securities Regulatory Commission approved the launch of the contract last week.The exchange announced the launch on Wednesday April 22. A spokesperson for DCE, based in Dalian, said the exchange was planning to launch the contract in late May. The size of the new contract will be 5 metric tonnes, and the trading fee should not exceed Rmb6...