According to the relevant information, it shows: business license, tax registration certificate and other documents and procedures. According to the "Regulations on Fertilizer Management", applying to the administrative department for industry and commerce for the sale of industrial potash fertilizer needs to meet the following conditions: (1) technicians corresponding to the fertilizers sold are needed; Need to have business premises, equipment and storage facilities suitable for the sold fertilizers; There should be rules and regulations to ensure the quality of fertilizer sold.