Write the name of the reception office at the top of the petition, and then write the petitioner's name, work unit, position and address. If it is a joint letter, the name, unit, detailed address and number of representatives of the two petitioners should be signed. Then write the complainant's demands, that is, what problems are required to be solved. Finally, write down my contact number and postal code. If it is a joint letter, each petitioner should sign it himself.