Does the sales department belong to a company or a self-employed person?

The business department can belong to both the company and the self-employed. If the business department is a part of the company, it is a part of the company and is responsible for management and operation. If the business department is a part of the self-employed, it is the business department of the self-employed, responsible for management and operation. Business scope of the company: wholesale and retail clothing, shoes and hats, bags, ornaments, educational supplies, daily necessities, etc.