1. If authorized by the party concerned, it can sign on behalf of the party concerned. If it is signed on behalf of the parties, a contractual relationship is established between the agent and the parties. 2. A contract concluded by the agent with a third party in his own name within the scope authorized by the principal, and the third party knows the agency relationship between the agent and the principal when concluding the contract, the contract directly binds the principal and the third party, unless there is definite evidence to prove that the contract only binds the agent and the third party.