China is the world's largest wind and photovoltaic country. As of 2019, China's newly installed photovoltaic capacity has been ranked first globally for seven consecutive years, and the cumulative installed capacity has been ranked first globally for five consecutive years, and the entire industry chain has basically achieved localization. In the four major links of photovoltaic industry - polycrystalline silicon/silicon wafers/battery cells/modules, China's industrial scale accounts for 58%, 85%, 70%, and 70% of global production, respectively.