Photovoltaic silicon wafer is a kind of wafer produced by silicon material processing, which is a necessary material for the production of photovoltaic solar energy, and most of its polysilicon and solar cell production and manufacturing need to be carried out in the purification workshop. According to different process intervals, different purification levels of purification workshops will be set up, and the core parts will be divided into thousands, generally 10,000 and 100,000. Each process in different purification compartments must formulate strict process requirements and process parameters.