TIANWEI engages in the entire value chain of the solar photovoltaic (PV) industry -- the R&D, manufacturing, sales and service of polysilicon materials, silicon wafers, PV cells, PV modules, and PV systems. Covering an area of over 150 acres, TWNE has a total investment of about USD1.5billion. TWNE`s current manufacturing capacity is 500MW for silicon wafers, 500MW for PV cells and 500MW for PV modules.The TIANWEI Group is a leading enterprise in the power transmission industry, and has the biggest transformer plant in the world.