It won't have any big impact. As long as it is the personal seal of the secretary, it will be recognized and have legal effect, which is not necessarily related to the position of the seal. According to the specific contents of the contract, it is necessary to require the unit to affix its official seal or special seal for the contract, and it is best to require the legal representative of the unit to sign it. If someone else signs on behalf of the company, it can be judged according to their authority whether they have the right to handle the affairs involved in the contract. If they have no right, they can be asked to attach a power of attorney. All seals should be transparent. And pay attention to whether the name of the unit seal corresponds to the name of the enterprise.

Article 280 of the Criminal Law of People's Republic of China (PRC) shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, control or deprivation of political rights, and shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years. Refers to the crime of forging, altering, buying and selling official documents, certificates and seals of state organs.

According to Article 490 of the General Principles of Civil Law of People's Republic of China (PRC), if the parties conclude a contract in the form of a contract, the contract is established when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.

A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.