Witnesses from SolarWorld, Trina, Yingli, SunEdison, Gintech and the Solar Energy Industries Association (SEIA) gave evidence in Washington on Monday as the US-China trade row approaches its conclusion.

An International Trade Commission (ITC) hearing today will see evidence for and against the imposition of anti-subsidy and anti-dumping duties as both sides debate whether Chinese imports have damaged the domestic US solar sector.

The Department of Commerce is expected on 16 December to make its final decision regarding punitive duties in the cases. Preliminary anti-subsidy duties of up to 35% were announced in June and anti-dumping rates of up to 165% were revealed in July.