What previously means
On this page11
The marking offense is written in the past perfect and that is deliberate
Unless the container or package has previously been plainly marked, labeled, or tagged. The state of the package is assessed as at the moment the movement begins.
So a cure after the fact does not help
Marking a container on arrival does not undo the transport of an unmarked one. Which makes the offense complete at the start of the journey rather than at its end.
That is a different timing from every other label rule here
A care label must be findable when the product is offered for sale. A fiber content statement must be on the product at sale. A hazard label must be on a container leaving a workplace.
And one of those is looser in an instructive way
Under the hazard communication standard the label for certain solid materials may be transmitted to the customer at the time of the initial shipment and need not accompany later shipments at all.
So two federal rules about a shipped container take opposite positions
One requires the marking to be on the package before it moves, every time. The other allows the information to travel once to a customer and never again unless it changes.
The difference is what the marking is for
A Lacey Act marking identifies what is inside a container to somebody inspecting it in transit. A hazard communication label informs an employer who will receive many identical shipments.
Which is the general point and it recurs across these properties
The persistence and timing of a label requirement follow from who has to read it and when. A label for an inspector must be on the box. A label for a repeat buyer need only reach the buyer.
Four persistence horizons are now cataloged in this library
Until the package is empty, for most container rules. Once per customer relationship, under the hazard communication standard. Through distribution, sale and resale to the ultimate consumer, for wool products. And the useful life of the product, for a care label.
This one adds a fifth and it is the only one defined by a moment
Before the movement starts. Not a duration at all, which makes it a different kind of requirement from the other four.
And nothing on this shelf carries any marking at all
No container here arrives printed, labeled or tagged. Whatever identifies the contents of a jar of hooks is written on it by whoever filled it, which is the ordinary situation on a small parts shelf.