I just installed the LG Hausys range which is eco friendly material and guys do ensure that your contractor use a glue that is green certified too. Mine used the Robert 3085 which is LEED certified and VOC less than 1g/L. Managed to get these from See Construction & Trading who specializes in vinyl flooring for childcare centers and hospitals.
https://www.google.com.sg/amp/www.businesskorea.co.kr/news/articleViewAmp.html?idxno=15396
https://www.google.com.sg/amp/www.businesskorea.co.kr/news/articleViewAmp.html?idxno=15396