Legal analysis: according to the articles of association and the company law, the resolution of the shareholders' meeting only needs to be signed, and the official seal of the company and the signature of the legal representative have the same external effect. You can choose one of them, but you'd better have both. If the shareholder is a legal person, the seal of the unit and the signature of the legal representative have the same effect. According to the above provisions, whether and how many shareholders need to sign the resolution of the shareholders' meeting depends on the matters discussed and the provisions of the company's articles of association.

Legal basis: People's Republic of China (PRC) Company Law.

Article 104 If this Law and the Articles of Association stipulate that matters such as company transfer, major asset transfer or external guarantee must be decided by the shareholders' meeting, the board of directors shall convene the shareholders' meeting in time, and the shareholders' meeting shall vote on the above matters.

Article 39 Shareholders' meetings are divided into regular meetings and temporary meetings. Regular meetings shall be held on time in accordance with the provisions of the articles of association. If shareholders representing more than one-tenth of the voting rights, more than one-third of the directors, the board of supervisors or the supervisors of a company without a board of supervisors propose to convene an interim meeting, an interim meeting shall be convened.