Leaf Bio has achieved Global Recycled Standard (GRS) certification for FDCA, PEF and BioFleax® Fiber — making it the world’s only company with GRS certification covering FDCA, PEF and PEF Fiber.
Developed by Textile Exchange, GRS is one of the most widely recognized standards for recycled materials, covering chain of custody, environmental management, social responsibility, and chemical management. The certification confirms Leaf Bio’s capabilities in recycled-content management, traceability and responsible manufacturing across the material value chain.
BioFleax:Setting a New Benchmark for Upcycling
BioFleax is Leaf Bio’s plant-based performance materials platform towards for textile. As the only GRS‑certified PEF fiber globally, it combines plant‑based innovation with recycled‑content feedstock, strengthening its Textile‑to‑Textile (T2T) pathway.
Beyond enabling closed‑loop circularity for itself, BioFleax also enables the upcycling of textile waste that currently lacks effective recycling methods. Through Leaf Bio’s proprietary technology, recycled cotton, lyocell, viscose and their synthetic blends can be converted into FDCA platform molecules and further processed into high‑performance PEF materials. This pathway moves beyond traditional downcycling, establishing a new circular value chain that allows waste textiles to re‑enter the material system at a higher value level.
The GRS certification validates this pathway, confirming that high‑performance PEF fibers can be produced from waste textile feedstocks. It also strengthens BioFleax’s position within the international standards framework required for global brand supply chains.
With ISCC PLUS, USDA Certified Biobased Product, REACH Compliance and B Corp Certification, GRS further strengthens Leaf Bio’s international certification framework, covering feedstock sourcing, bio‑based content, recycled material management, and regulatory compliance — supporting global market access and brand supply chain qualification.

About BioFleax®
BioFleax® is Leaf Bio’s plant-based performance materials platform, created to reinvent the substance of textiles. Drawn from renewable biomass and refined through molecular precision, BioFleax delivers elevated handfeel, lasting comfort, and functional performance — engineered to scale. BioFleax brings the rigor of materials science to the texture of everyday life.
About Leaf Bio
Leaf Bio is a global leader in plant-based aromatic materials, dedicated to the development and production of furan-based compounds characterized by renewable sourcing, low carbon footprint, and superior performance.With proprietary technology and large-scale production capacity — including the world’s first kiloton-level facility for furan materials — Leaf Bio is advancing plant-based innovation across packaging, textiles, electronics, and mobility.
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