(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.