Your right, you don't get it.

Lets take this one.
"how many were made"

If they were to tell you they made 1,000 - $100 chips for Casino A.
He would now know the total $100 chip float.

It would be pretty easy for a counterfeiter to figure out how many were in the table banks and how many in the cage bank. He would now figue out how many counterfeits he could get down before anyone noticed the float all of a sudden jumped up. Floats are reconcilled once a day.

Short version, but you should now understand why all info is kept private.

Forget about the fact that a casino would never again buy from a manufacturer that gave any info to a customer!