The United States on Tuesday confirmed anti-dumping and anti-subsidy duties on large wind towers imported from China and Vietnam.

The Commerce Department said Chinese and Vietnamese manufacturers sold utility-scale wind towers in the United States at dumping margins of 44.99-70.63 percent and 51.50-58.49 percent, respectively.

The Chinese producers received countervailing subsidies of 21.86-34.81 percent, it said.

As a result of the anti-dumping determinations, "Commerce will instruct US Customs and Border Protection to collect cash deposits equal to the applicable weighted-average dumping margins," according to a statement.

The main affected Chinese companies include Chengxi Shipyard Co. and Titan Wind Energy (Suzhou) Co., and the CS Wind group in both China and Vietnam.

In January, the Commerce Department opened an inquiry on wind towers made in the two Asian countries following a complaint filed by the Wind Tower Trade Coalition, an association of four US manufacturers.

China warned at the time that the US probe would hamper bilateral cooperation in new energy and hurt global efforts to address climate change.

In 2011, imports of utility-scale wind towers from China and Vietnam were valued at roughly $222 million and $79 million, the department said.

In a separate announcement, Commerce determined that Vietnamese steel wire clothing hanger producers exported their products to the United States at dumping margins of 157.00-220.68 percent, and had received subsidies of 31.58-90.42 percent.

In 2011, imports of steel hangers from Vietnam were valued at about $32 million.