製造せいぞうしょ固有こゆう記号きごうでしょう
seizō sho koyūkigōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 製造所固有記号

1. Probably the manufacturer's unique code.; Possibly a manufacturer-specific code.

Polite
Presumptive
Conjecture