Product manufacturing and distribution company: Engaging in the import and export business of various goods and technologies (except for those commodities and technologies restricted for operation or prohibited from import and export by the state). Retail of medical masks: Wholesale of medical masks: Sales of daily-use masks (non-medical masks); Retail of medical protection supplies for medical staff: Wholesale of medical protection supplies for medical staff; Sales of labor protection supplies (Projects that require approval according to law can only be carried out after obtaining the relevant approval from the relevant authorities). (Except for projects that require approval according to law, general items: Internet sales (except for goods that require licensing for sale); The above-mentioned activities can be carried out independently in accordance with the law as stipulated in the business license)