Legal analysis: In practice, if the signature is generally forged, the contract should be deemed invalid. However, this rule is not absolute. In the case of "apparent agency", even if the actor does not have agency rights and forges the seal, the contract is still valid for the profit-making company; legally, this is to protect the transaction The trust interests of a bona fide third party.

Legal basis: Article 280 of the "Criminal Law of the People's Republic of China" A person shall be sentenced to fixed-term imprisonment of not less than three years, criminal detention, public surveillance, or deprivation of political rights, and shall also be fined; if the circumstances are serious, he shall be sentenced to fixed-term imprisonment of not less than three years and not more than ten years, and shall also be fined. Anyone who forges the seal of a company, enterprise, institution, or people's organization shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance, or deprivation of political rights, and shall also be fined. Anyone who forges, alters, or buys or sells resident identity cards, passports, social security cards, driver's licenses, or other documents that can be used to prove identity according to law shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance, or deprivation of political rights, and shall also be fined; if the circumstances are serious, , shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years, and shall also be fined. Article 280-1: In activities that require proof of identity in accordance with national regulations, use forged, altered or stolen resident ID cards, passports, social security cards, driver's licenses, etc. that can be used to prove identity according to law. certificates, and if the circumstances are serious, he shall be sentenced to criminal detention or surveillance, and shall also or solely be fined. If the conduct in the preceding paragraph is committed and constitutes other crimes at the same time, the offender shall be convicted and punished in accordance with the provisions on heavier penalties. Article 280-2 Whoever embezzles or assumes the identity of another person to replace the higher education admission qualifications, civil servant recruitment qualifications, or employment placement benefits obtained by others shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, or public surveillance, and shall also be fined. Anyone who organizes or instructs others to commit the acts mentioned in the preceding paragraph shall be severely punished in accordance with the provisions of the preceding paragraph. If a state functionary commits the acts in the preceding two paragraphs and constitutes other crimes, he shall be punished in accordance with the provisions of concurrent punishment for several crimes.