Legal analysis: Sole proprietorship: refers to an enterprise with one investor, funded by an individual, and registered with the industrial and commercial administration department in accordance with relevant regulations.

Joint venture: refers to an enterprise in which two or more investors jointly contribute capital and are registered with the industrial and commercial administration department in accordance with relevant regulations.

Legal basis: "Company Law of the People's Republic of China" Article 23 To establish a limited liability company, the following conditions must be met: (1) The shareholders meet the quorum; (2) All shareholders have subscribed in compliance with the provisions of the company's articles of association.

The amount of capital contribution; (3) The shareholders jointly formulate the company's articles of association; (4) There is a company name and an organizational structure that meets the requirements of a limited liability company; (5) There is a company domicile.