Chinese solar manufacturers came under fire last week with news breaking that SolarWorld and six unnamed American manufacturers were filing a trade complaint, alleging unfair trading practices and pushing for a tariff of 100 percent to be placed on all crystalline silicon cells and modules imported from China. The news broke while the solar industry convened at Solar Power International 2011 in Dallas, and the filing set the stage for a fast-moving process that could result in tariffs on Chinese imports into the U.S. within six months. The news has drawn a sharp response from the Chinese government, which accused the American solar industry of protectionism.