FILE - In this Feb. 7, 2012, file photo, workers check solar panels at a solar power station on a factory roof in Changxing in eastern China's Zhejiang province. One of China's biggest makers of solar panels said Tuesday, Feb. 6, 2018, that it will invest $309 million to expand manufacturing in India to guard against what it said is a rising threat of import controls in the United States and other markets. (Chinatopix via AP, File)
Chinese suppliers flooded US with solar panels at end of last year. AP

Rush of China solar panels to US ahead of tariffs