Complex sentence: The documentary reveals that a few large vinyl production companies signed a secrecy agreement to make sure Maltone's findings stay secret from the rest of the world, but they do set certain rules and regulations on vinyl productions plants to try and avoid excessive lawsuits.
Split into simpler sentences: The documentary reveals that a few large vinyl production companies signed a secrecy agreement to make sure Maltone's findings stay secret from the rest of the world. But, the vinyl producers do set certain rules and regulations on vinyl productions plants to try and avoid excessive lawsuits.