The parties may entrust an agent to carry out civil legal acts according to law, and the principal shall bear the consequences and responsibilities for the agent's actions within the scope of authorization. Therefore, the sales contract may not be signed by himself, but by the agent, and it is still valid.
Legal basis: According to Article 143 of the Civil Law, when concluding a contract, the parties shall have corresponding capacity for civil rights and capacity for civil conduct. The parties may entrust an agent to conclude a contract according to law.
Model contract for the sale of second-hand houses 1
Seller (hereinafter referred to as Party A):
Name: _ _ _ _ _ _ (ID number):
A