Legal basis: Article 7 of the Measures for the Administration of Public Security of People's Republic of China (PRC) Seal. State organs of power at all levels, party and government organs, judicial organs, organs participating in and discussing state affairs, armed forces, armed police, democratic parties, the Communist Youth League, trade unions, women's federations and other organs and organizations need to engrave seals, and the seal management department of the issuing organ shall issue an official letter and go through the filing formalities with the public security organs of the local people's governments at or above the county level. The public security organ of the people's government at or above the county level shall immediately handle and issue an accurate engraving certificate.