Zhè shì hétong de dìnggǎo, qǐng nín qiānzì qián zài kàn yí biàn.
This is the final version of the contract; please read it through once more before you sign.
Tips
usage
A text goes from 草稿 (rough draft) to 初稿 (first draft) to 定稿 (final version). As a verb it means signing off on that last version, after which no more changes are made.