A worker inspects solar panels at a solar farm in Dunhuang Thomson Reuters WASHINGTON (Reuters) - The United States confirmed steep import duties on solar products from China and Taiwan on Tuesday, according to a statement from the Department of Commerce.

Anti-dumping duties for Chinese goods were set as high was 165.04 percent as the U.S. arm of German solar manufacturer SolarWorld AG seeks to close a loophole which allowed Chinese producers to sidestep duties imposed in 2012.

Taiwanese producers face anti-dumping duties as high as 27.55 percent, according to the final Commerce decision. Producers in China also face separate anti-subsidy duties.

The duties, which will affect companies including China's Trina Solar Ltd and Suntech Power and Taiwan's Motech Industries Inc <6244.TWO>, must still be confirmed by the U.S. International Trade Commission.

The ITC will make its final decision by Jan. 29.

(Reporting by Krista Hughes)