China's Zhanjiang Guolian Aquatic Products Co has hired a legal team to respond to the countervailing investigation launched by the United States into frozen warmwater shrimp imported from China, the company said in a filing to the Shenzhen Stock Exchange Tuesday.

The Guangdong-based company said it has been listed as a mandatory respondent in the case, meaning that it may be given a special countervailing duty by the United States.

Zhanjiang Guolian is one of only two companies in the world that enjoy zero duty on exports of shrimps to the United States Beijing-based newspaper Securities Daily reported Tuesday.

Zhanjiang