1, report the case. The official seal shall be filed in the public security organ, and the legal representative shall bring the original and photocopy of the ID card and the original and photocopy of the business license to the police station under the jurisdiction of the lost place as soon as possible to report the case and obtain the notification certificate;

2. Newspaper statement. With the original and photocopy of the report and the original and photocopy of the business license, make an announcement in the daily public newspapers above the city, stating that the official seal is invalid;

3. The company as a legal person shall, within 3 days from the date of publication in the newspaper, hold a complete loss report, a copy of the business license of the enterprise, the original and copy of the legal person's ID card, and the official seal signed by the legal representative in writing to explain the loss;

4. Go to the public security organ for the record and formally seal it, and make a new official seal.

Obtain the seal engraving license approved by the Public Security Management Section, change the official seal style, re-engrave the seal, and notify the relevant business units. The official seal cannot be used privately, which belongs to the company's management system. If the company's interests suffer heavy losses due to private use, it will constitute a criminal offence. Generally, the private official seal will not be treated as a crime, and the handling methods will be different according to different situations.

Legal basis: Article 174th of the Criminal Law of People's Republic of China (PRC).

Crime of setting up a financial institution Whoever sets up a commercial bank, a stock exchange, a futures exchange, a securities company, a futures brokerage company, an insurance company or other financial institution without the approval of the relevant competent department of the state shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention and shall also, or shall only, be fined not less than 20,000 yuan but not more than 200,000 yuan; 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 not less than 50,000 yuan but not more than 500,000 yuan.

Crime of forging, altering or transferring business licenses or approval documents of financial institutions Whoever forges, alters or transfers business licenses or approval documents of commercial banks, stock exchanges, futures exchanges, securities companies, futures brokerage companies, insurance companies or other financial institutions shall be punished in accordance with the provisions of the preceding paragraph.

If a unit commits the crimes mentioned in the preceding two paragraphs, it shall be fined, and the directly responsible person in charge and other directly responsible personnel shall be punished in accordance with the provisions of the first paragraph.