Yes The company seal can replace the handwritten signature. The seal of the enterprise has been filed in the Public Security Bureau. If the authenticity of the signature is disputed, you may apply for judicial expertise to distinguish the authenticity. Generally, if there are no special requirements, the company's contracts or other documents can be stamped with the official seal. A contract established in accordance with the law in Article 6868, paragraph 502 of the Civil Code shall come into effect upon its establishment, unless otherwise stipulated by law or agreed by the parties. In accordance with the provisions of laws and administrative regulations, if the contract should go through the approval procedures, such provisions shall prevail. If the failure to go through the formalities such as approval affects the effectiveness of the contract, it will not affect the performance of the obligation clauses such as approval and the effectiveness of relevant clauses in the contract. If the party that should go through the formalities for approval fails to perform its obligations, the other party may require it to bear the responsibility for violating its obligations.