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

Noun
Desu Copula

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

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

Polite
Presumptive
Conjecture