Is Centroproizvod a Serbian brand?
Yes. Centroproizvod is a Serbian brand.
company: Nestlé Adriatic S d.o.o., Železnička 131, 11077 Surčin, Beograd
why it is listed
The registry gives NESTLE ADRIATIC S DOO BEOGRAD-SURČIN, Železnička 131, 11077 Surčin, PIB 107073029, owner Société des Produits Nestlé S.A. Centroproizvod, maker of the "C" condiments, was acquired by Nestlé in 2011 and folded into this entity at the same Surčin factory; centroproizvod.rs no longer resolves.
Source: companywall.rs
Local alternatives
Since this product is registered with GS1 Serbia, here are some Kosovo/Albania alternatives in the same category:
EuroFood
EuroFood, Prizren — Kosovo
EuroFood (Prizren, Kosovo) is a producer of pickled vegetables, ajvar, ketchup, mayonnaise and marmalade, with its own bottles printed "EuroFood - Prizren, Kosova".
same categorySource: euro-food.org
Reported pairing: euro-food.org
Art Food
Frutex L.L.C., Suharekë — Kosovo
Art Food is Frutex’s own ketchup and marmalade line, produced at its Suharekë plant alongside Golden Eagle and Relax.
same categorySource: frutex-ks.com
Reported pairing: frutex-ks.com
EuroFood (majonezë)
EuroFood sh.p.k., Prizren — Kosovo
EuroFood (Prizren, founded 1999 — "Ne grumbullojmë, përpunojmë dhe prodhojmë produkte premium nga pemët dhe perimet") publishes its own Majonez category: Super Majonez in nine sizes plus Fast Food Majonez.
same categorySource: euro-food.org
Reported pairing: euro-food.org
ABI Progres (majonez)
ABI Progres, Prizren — Kosovo
ABI Progres — "përpunuesi më i rëndësishëm i pemëve dhe perimeve, në Kosovë" on its own about page — lists Majonez Ekstra 500 g and 630 g with a full ingredient declaration on its own product page.
same categorySource: abiprogres.com
Reported pairing: abiprogres.com
What this means — and what it doesn't
A GS1 prefix only shows which organisation the barcode owner is registered with — not necessarily where the product was manufactured. The real place of manufacture is on the physical product's "Made in" label.