The documents needed to sell fermented vinegar online include food circulation license, business license, tax registration certificate and health certificate.

According to Article 62 of People's Republic of China (PRC) Food Safety Law, providers of third-party platforms for online food transactions should register online food operators with their real names and clarify their food safety management responsibilities; If a license should be obtained according to law, the license should also be reviewed. If the provider of the third-party platform for online food trading finds that the online food business operators have violated the provisions of this Law, they shall stop it in time and immediately report to the food and drug supervision and administration department of the local people's government at the county level; If a serious illegal act is found, it shall immediately stop providing online trading platform services.