Organize, supervise and manage brokers and brokerage institutions in accordance with the law. Organize and implement the administrative supervision and management of contracts in accordance with the law, organize and manage the registration of chattel mortgages, organize the supervision and management of auctions, and investigate and deal with illegal activities such as contract fraud. Supervise and manage advertising in accordance with the law and investigate and punish illegal activities. Formulate trademark development strategies, publicize and implement trademark legal knowledge, be responsible for trademark supervision and management, protect the exclusive rights of registered trademarks, investigate and deal with trademark infringements in accordance with the law, recommend famous trademarks in the province, and identify (recommend) well-known trademarks. Organize, supervise and manage the business activities of individual industrial and commercial households, individual partnerships and sole proprietorships in accordance with the law. Responsible for the industrial and commercial administration work within the jurisdiction. Responsible for the organization, establishment, personnel, labor and management, disability assessment, finance, auditing, disciplinary inspection, supervision, retired personnel, statistics, information, state-owned assets management, etc. of the system. Guide the work of associations (society) headed by the industrial and commercial administration departments. Undertake other tasks authorized and assigned by superior industrial and commercial administrative departments and governments.