No matter what kind of company, the investor becomes a shareholder, not necessarily a director, who is elected by the shareholders' meeting.
Answer your question.
1, personally, it is right not to evaluate the turnover, because the contribution to the company should be made with quantifiable property, and the contribution should be calculated.
2. The company has a shareholders' meeting, a board of directors and a board of supervisors. The shareholders' meeting is composed of all shareholders, but it does not directly manage the daily activities of the company, but only makes major decisions. The board of directors is elected by the general meeting of shareholders, and the number of directors is 3 to 13, which is legal. The board of directors implements the major decisions of the shareholders' meeting. Generally, the daily affairs are decided by the board of directors, and the board of directors is responsible for the shareholders' meeting. There should be staff representatives in the board of supervisors. The board of supervisors is of little significance and is often an empty shell. The general manager is a senior manager appointed by the board of directors. Buying shares must be a shareholder, not necessarily a board member. As for how to prevent someone from encroaching on the company's property, you should make good use of your voting right and keep an eye on the company's operation and finance.
3. You can't comment on this.
When a company is established, it must have its own articles of association, which is equivalent to its internal articles of association. To start a company, you need to know the relevant laws and regulations, at least the company law, finance and taxation, and then think about how to make a decision. It is best to consult a lawyer for uncertain questions.