CGREEN develops bio-based carbon fiber from cellulose, following ten years of research. Based in Carquefou, France, founded in 2025.
Verification note, September 2026: the composites company is the Carquefou entity, SIREN 939443784. A wholly unrelated CGREEN, SIREN 838238442 at Le Closeau in Ploërmel, heads an organic poultry and hospitality group. CGREEN has no public website on record, so no site is linked here.
CGREEN was one of 20 finalists at the JEC Composites Startup Booster at JEC World 2026.