Those are PRODUCTION markings.
The Big Bang Theory Season 3, Episode 17
...distribution and PRODUCTION of
Fring's methamphetamine enterprise.
Breaking Bad Season 5, Episode 8
...to inadequate serotonin PRODUCTION.
The Big Bang Theory Season 1, Episode 10
Look,
we control PRODUCTION
and distribution.
Breaking Bad Season 2, Episode 5
That's the one thing I'm certain of,
PRODUCTION cannot stop.
Breaking Bad Season 3, Episode 13