なま分解 ぶんかい せいプラスチックでしょう
nama bunkai sei purasuchikkudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 生分解性プラスチック

1. Biodegradable plastic, probably.; It will likely be biodegradable plastic.

Polite
Presumptive
Conjecture