There was no penalty/death sentence for the recent public incident of the oil tank truck that was found transporting both toxic industrial oil and cooking oil,

There was no penalty/death sentence for the recent public incident of the oil tank truck that was found transporting both toxic industrial oil and cooking oil, without cleaning in between. Which apparently was a wide-spread practice, as confirmed by netizens. Instead the officials just hand waved and said it's an isolated incident, and they're looking into it. And no news of it since.