Romanian Cartridges and Projectiles Factory Codes

Hello everyone,

It’s been a while since I’m looking for the codes stamped on romanian cartridges and artillery munitions and also painted on romanian ammunition crates. As an example: 15, 21, 22 for cartridges assembly factories (stamped on cartridges and also painted on ammo crates), U for the factory which produces powder (painted on crates) etc.
I don’t need to know what they mean and their position, but to know all of them, as a list. Like, for cartridges assembly factories, 15, 21, 22, 314…; for powder factories U, F, 1… On both cartridges and projectiles, as well on ammunition crates.
I thank to everyone who will help.

Bogdan