Legal analysis: the company's power of attorney must be signed by himself. Where another person is entrusted to exercise the legitimate rights and interests on his behalf, the principal shall issue an entrustment contract when exercising his functions and powers. The trustor shall not abandon the entrusted matters for any reason. The power of attorney shall specify the agent's name, agency matters, authority and time limit, and shall be signed or sealed by the principal.

Legal basis: Article 65 of the Civil Procedure Law of People's Republic of China (PRC), the agency of civil juristic acts can be in written form or oral form. If the law requires it to be in writing, it shall be in writing. The written power of attorney for entrusted agency shall specify the name, agency matters, authority and time limit of the agent, and shall be signed or sealed by the principal. If the power of attorney is unclear, the client shall bear civil liability to the third party, and the agent shall bear joint liability.