Orrick, Herrington & Sutcliffe has signed on to lobby for the Chinese solar panel manufacturer JinkoSolar Inc. as the company pushes to open a U.S. factory and lower tariffs on imported solar cells.

Orrick partner Harry Clark in Washington, who leads the firm’s international trade and compliance group, will lobby for JinkoSolar alongside senior counsel W. Clark McFadden II and firm in-house economist Gregory Hume.