Pistol/shotgun powder SB 620?

[CJ6]

Who makes this powder?
This is not milsurp pull down , it comes in 7lb jugs.

 

[qec]

Quick google search will yield an answer. I have no person experience or knowledge with it.

 

[divingin]

Serbian made; found this on the web (the post I saw was cut from another site):

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Following up on possible line on powder that is identified as “Serbian Military powder NAMENSKA” by the source.
Edit - just found out the 2 powders are SB511 and SB620.

I know nothing about this but internet searches show it in PRVI rounds, another hit says “it’s corrosive”.

What can you all add to my research?

Edit 2 - continued digging online turns up a certification on prvipartizan.com that their commercial ammo is noncorrrosive, both powder and primers. Continuing to dig for info on these particular powders.
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[CJ6]

I've done some looking into it also since posting.
Serbian made. Some say similar to 572, others say not even close.
A local auction site has a 7lb jug up for sale and I'm curious about possibly buying it.
It seems the "net" is all over the place on information about it, even so called factory sites differ.