Legal analysis: a legal person refers to a unit, and its legal representative cannot be abbreviated as a legal person. Generally speaking, the company's power of attorney comes into effect when the company seals it, and whether the legal representative signs it or not is not important. Requiring the authorized representative to sign or seal in the power of attorney means that any signature or seal of the authorized representative is valid, that is, only the authorized representative's signature or company official seal can be stamped.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 919 An entrustment contract is a contract in which the principal and the agent agree that the agent shall handle the principal's affairs.

Article 922 The agent shall handle the entrusted affairs in accordance with the instructions of the principal. If it is necessary to change the client's instructions, it shall be approved by the client; If it is difficult to get in touch with the client due to an emergency, the agent shall properly handle the entrusted affairs, but shall report the situation to the client in time afterwards.