油脂 ゆし工業 こうぎょうではありませんでした
yushi kōgyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 油脂工業

1. Was not in the oil and fat industry.; Was not related to the oil and fat industry.

Past/Perfective
Negative
Polite
Formal Register