What does the TW mean in NANYA RAM?

I brought a used R710 which came with 32GB of ECC Nanya RAM, all of the RAM sticks are identical (NT4GC72B4NA1NL-CG) 4GB RAM sticks, however, they have a number next to them that is different, e.g: 0934.TW 1010.TW e.t.c.

Also, there appears to be another model number towards the bottom of the label which is different despite the RAM model numbers being the same

Finally, there is also a number printed onto the RAM itself: NIN0933 and NIN1006

What do these numbers mean?

Solution 1:

It turns out that the other codes do not mean anything and the RAM sticks are identical (since their storage and speed is as well)