An initial investigation showed that the U.S. provides subsidized soybeans and corn to its poultry industry, hurting Chinese producers, the Ministry of Commerce said on its Web site today. Importers must pay the new tariff on top of anti-dumping duties of as much as 105.4 percent imposed in February. Corn and soybeans are used in chicken feed, according to Reuters.

“These taxes effectively make it impossible to import any U.S. chicken products,” Li Qiang, managing director at Shanghai JC Intelligence Co., said by phone from Shanghai. “U.S. chicken product exports to China have already shrunk drastically since the announcement of an anti-dumping duty.”