Legal analysis: the power of attorney of the company refers to the legal document that the company entrusts others to exercise the legitimate rights and interests of the company on behalf of the company, and the client needs to issue it when exercising his power. This is a company that authorizes others to exercise their rights, and often a standardized company has a power of attorney in addition to the company's seal. It should also be signed by the legal representative or stamped with the signature seal. However, if the power of attorney issued by the company is only stamped with the company seal, it is also valid, and it does not have to be signed by the legal representative. However, while considering the effectiveness of the power of attorney, we should also consider the authenticity of the power of attorney, not just the seal.

Legal basis: Article 128 of the Company Law of People's Republic of China (PRC) shares shall be in paper form or other forms stipulated by the securities regulatory authority of the State Council. A stock shall contain the following main items: (1) the name of the company; (2) Date of establishment of the company; (3) The type, face value and number of shares represented by the shares; (4) the serial number of the stock. The shares shall be signed by the legal representative and sealed by the company. The sponsors' shares shall be marked with the words sponsors' shares.