A business license is required to sell bulk laundry detergent. Because the sale of bulk laundry detergent requires relevant certificates issued by the industrial and commercial department and the security inspection department before it is allowed to be sold on the market, a business license is required to sell bulk laundry detergent. A business license is a certificate issued by the industrial and commercial administration authority to industrial and commercial enterprises and self-employed individuals allowing them to engage in certain production and business activities. Its format is uniformly stipulated by the State Administration for Industry and Commerce. The registration matters are: name, address, person in charge, amount of funds, economic composition, business scope, business method, number of employees, business period, etc. The business license is divided into original and duplicate, both of which have the same legal effect. Business licenses may not be forged, altered, rented, lent or transferred. Industrial and commercial enterprises or self-employed individuals without a business license are not allowed to open their business. They are not allowed to engrave official seals, sign contracts, register trademarks, or publish advertisements, and they are not allowed to open bank accounts.