Specialized merchants are various entities that accept credit cards issued by banks, other financial institutions and financial companies as a means of payment in circulation and are willing to provide services. Refers to enterprises, institutions, individual industrial and commercial households or other organizations that sign a bank card acceptance agreement with an acquirer, accept bank cards as agreed, and entrust the acquirer to complete transaction fund settlement for them, and in accordance with the relevant regulations of the national industrial and commercial administration authorities, Natural persons who carry out business activities such as online commodity trading. These shops, restaurants, hotels, entertainment venues and other units that accept credit cards and provide credit card services are collectively called special merchants.