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ポリスルホンじゃありませんでした
porisuruhonjārimasendeshita

敬
Noun
, 
Desu Copula

The polite, past negative form of ポリスルホン

1. Was not polysulfone.; It was not polysulfone.

Past/Perfective
, 
Negative
, 
Polite
, 
Terminal Form