Photovoltaic is short for photovoltaic, which is simply a phenomenon of light into electricity. That is, the best way to use solar energy is photovoltaic conversion, which is the use of photovoltaic effect, so that sunlight is emitted onto the silicon material to generate current directly. The industrial chain formed by the application and development of silicon materials is called the "photovoltaic industry", including the production of high-purity polysilicon raw materials, solar cell production, solar cell module production, and the manufacturing of related production equipment.