written petition
A formal written document submitted to an authority to request a specific action or redress.
The residents submitted a written petition to the city.
Many signatures were gathered on the petition.
陳情書 is a statement of opinion or request submitted to a public office, less formal than 嘆願書 and often used for policy suggestions.
Compound of 嘆願 (appeal, entreaty) and 書 (document, writing).