The legislation signed on May 5 is the latest in a flurry of bills tightening control over freedom of speech and the Internet.
The new law, which takes effect on July 1, covers literature, theater, film, and recorded music.
The law does not say what constitutes "foul language" but it sets fines for its use in works of art ranging from $56 for individuals to as high as $1,400 for legal entities.
Works of art that contain "foul language" will now have to be issued in special packaging. The public showing of films containing profanities will be restricted.
In case of disputes, an expert panel might be called to determine if a word is profane.