Glencore sets April 16 deadline for completing Xstrata merger GLENCORE said that China was reviewing the commodities giant's proposed merger with Xstrata with a particular focus on whether the combined company would exert influence on China's copper market. The Baar, Switzerland-based miner however doesn't expect the Chinese regulatory review process to present any major problems since Glencore has already marketed most of Xstrata's products into China and there are between 20 to 30 different companies that supply copper to China, the company's chief executive Ivan Glasenberg said. Glencore and Xstrata together account for less than 10 per cent of China's total copper supply, Mr Glasenberg said.