In April 2019, Shenzhen Expressway successfully acquired a 51% stake in Nanjing Wind Power Technology Co., Ltd. (Nanjing Wind Power), marking Shenzhen Expressway's official entry into the wind power industry segment of the large environmental protection industry, and has the R&D, design, production and sales of wind turbines, production and sales, and wind power. Field resource development and construction, operation and management capabilities. Nanjing Wind Power is a high-tech enterprise specializing in the R&D, production and sales of large-scale wind turbines. Relying on the R&D team of more than 100 people in the two R&D centers in Nanjing and Hamburg, Germany, the company is specialized in wind power prediction, system control algorithm, wind aerodynamics and wind power. CAE and other fields have reached the international leading level. For Category IV wind farms in areas with poor wind resources, NJ100-1500MW, NJ130-2.XMW (ultra) low wind speed wind turbines have been developed, as well as 1.5MW, 2MW, 3.XMW, 4.XMW, 5MW and other series models.