Standard Chartered Plc said its $175 million provision to cover its exposure to suspected commodities fraud in China was the result of a conservative view of possible costs but didn't believe there were widespread problems in the sector. Chinese authorities launched an investigation in May into whether metals trading firm Decheng Mining and related companies used fake warehouse receipts at Qingdao Port to obtain multiple loans secured against a single cargo of metal. "We believe that in the provisioning we have taken we have taken a very conservative approach. Our exposure in the warehouses around Qingdao is around $250 million in total," StanChart Chief Executive Peter Sands told reporters on a call on Wednesday after the London-based bank announced first-half results.