https://www.kaneka.co.jp/topics/news/2021/nr2105251.html
a_環境
https://www.kaneka.co.jp/topics/news/2021/nr2105251.html
https://www.m-chemical.co.jp/news/2021/__icsFiles/afieldfile/2021/08/06/20210805biopbsrev_1.pdf