maintenance@ (Adds details, background)
BEIJING, Aug 17 (Reuters) - Dongying Fangyuan Nonferrous Metals Co., one of China's largest copper smelters, has closed the second stage of its smelter in Shandong province for maintenance, a company official said on Thursday.
The maintenance will last "around 20 days," until early September, the official said.
The Dongying smelter has a capacity of 400,000 tonnes per year, he said. The second stage accounts for 300,000 tonnes per year of that, according to media reports.
Expectations of curbs in Chinese metal supply against a background of robust demand pushed metals futures prices to multi-year highs this week. (Reporting by Tom Daly; Editing by Susan Fenton)