The official seal is the seal used by the company to handle internal and external affairs, and the official documents, reports and letters of the company need to be stamped with the official seal. A contract seal is a seal affixed to a contract when a company reaches an agreement with other companies in business. A contract stamped with a contract seal has legal effect. If both parties violate the relevant provisions of the contract, they need to bear corresponding legal responsibilities. It should be noted that the contract seal is only used for commercial contracts, but the official seal can be used instead of the contract seal.

Legal basis: Article 490 of the Civil Code? If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.

Article 493 of the Civil Code Where the parties conclude a contract in the form of a contract, the place where the contract is finally signed, sealed or fingerprinted shall be the place where the contract is established, unless otherwise agreed by the parties.

Article 52 of the Law on Public Security Administration Punishment commits one of the following acts, and shall be detained for more than 10 and less than 15, and may also be fined less than 1000 yuan; If the circumstances are relatively minor, they shall be detained for more than 5 days 10 days, and may also be fined up to 500 yuan:

(1) Forging, altering or buying or selling official documents, certificates, certification documents and seals of state organs, people's organizations, enterprises, institutions or other organizations;

(2) buying, selling or using forged or altered official documents, certificates and supporting documents of state organs, people's organizations, enterprises, institutions or other organizations;

(3) Forging, altering or reselling tickets, boat tickets, air tickets, tickets for cultural performances, sports competitions or other valuable tickets;

(4) Forging or altering a ship's registration number, trading or using a forged or altered ship's registration number, or altering a ship's engine number.

Article 280 of the Criminal Law whoever forges, alters or buys or sells official documents, certificates or seals of state organs 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, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined.

Whoever forges the seals of companies, enterprises, institutions or people's organizations 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.

Whoever forges, alters or buys or sells identity cards, passports, social security cards, driver's licenses and 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, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years and shall also be fined.

Whoever uses forged, altered or embezzled other people's identity cards, passports, social security cards, driver's licenses and other documents that can prove his identity according to law in activities that should provide identification according to state regulations, if the circumstances are serious, shall be sentenced to criminal detention or control and shall also or only be fined.

Whoever commits the acts mentioned in the preceding paragraph and constitutes other crimes shall be convicted and punished in accordance with the provisions of heavier punishment.