炭素 たんそ中立 ちゅうりつじゃなかったです
tansochūritsujanakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of 炭素中立

1. Was not carbon neutral.; Wasn't carbon neutral.

Past/Perfective
Negative
Polite
Casual Register