Ruling the 11 involved with countervailing measures violate wto rules, so the heat exchange system urge the us side to correct its illegal measures. After a few times after each other, July 16, 2019, the world trade organization (wto) released the appellate body report. This paper statistics the September to today issued a total of 2. 85 gw pv power plant EPC and 1. 9 gw component bid opening information. Photovoltaic applications from 2007 to 2012, the United States on Chinese solar panels, polysilicon, wind power tower, the cylinder and aluminum products such as the implementation of the countervailing duties. Specifically, CGNPC in development of 410 mw, 603 mw, guangzhou energy saving 220 mw, 345 mw, jin can group the people vote for 200 mw, 190 mw hubei energy group, China huaneng 180 mw in 2012 lawsuit against the practice of this kind of mistake to WTO. Polysilicon, EPC project owner units is given priority to with soe/state, this also reflected from the side, in project bidding and parity, the solar building state-owned enterprises has become the absolute main force. Solar photovoltaic (pv) net news: the world trade organization ( WTO) Local time on November 1, ruled that because the U. S. government was unable to comply with the decision, cancel to China's anti-dumping duties. Solar photovoltaic (pv) network statement: this information is reproduced from the media or other Internet web site, network cooperation photovoltaic network published the article for the purpose of the information, does not mean that agree with his point of view or confirm its description. The article content is for reference only. So the heat exchange system