Photovoltaic solar power generation is the first choice of solar energy use direction. While quartz sand of high purity play a key role of photovoltaic industry. Quartz sand of high purity can be heated and reduced to make high purity poly-silicon of solar grade. Quartz crucible can be the reactor of poly-silicon ingot casting. The quartz crucible made by silex glass is clean and high temperature resistant and without foreign substance, which is widely used in the solar energy poly-silicon abstraction as well as processes related to silicon slice and silicon bar of battery. Silex glass is the key processing consumables.