According to Beijing Antaike Information Development Company Copper, China's demand for metals will remain steady even as growth slows in the world's largest user. Zinc and lead consumption will stay unchanged this year from estimates in the Q4.

The company, established in 1992, works under the China Nonferrous Metals Industry Association which comprises major producers and trading firms.

Banks from Mizuho Financial Group Inc to Standard Chartered Plc cut their growth forecasts for the Chinese economy this year after the government reported a day earlier growth slowed to 7.5% in the Q2 from the previous quarter's 7.7% gain.

Others including Macquarie Group Limited to HSBC Holdings Plc have reduced price forecasts for the three metals, citing slowing expansion in China, which accounts for more than 40% of world consumption for the materials.