RENW and PAPACKS have demonstrated that fiber-based packaging can match EPS in real-world seafood cold-chain logistics. In 72-hour trials with TransGourmet Seafood, the Fiber Box maintained structural integrity under 8 kg of fish and direct ice, while keeping internal temperatures below 1°C for over five days.
Short on time? Jump to specs or request lane-level guidance.
For decades, the seafood industry has relied on a single assumption: only plastic foam can survive the cold chain. The high-humidity, 0–2°C environment of professional seafood logistics has long been considered the ultimate graveyard for fiber-based packaging.
Last month, we proved that assumption wrong.
At fish international 2026 (Feb 22–24 in Bremen, Germany), RENW and our partner PAPACKS unveiled the results of our rigorous cold-chain trials conducted with TransGourmet Seafood in Bremerhaven. We did not test our Fiber Box in a sterile lab; we tested it in real-world, day-to-day logistics operations.
Next step
Bring your current SKU, lane profile, and temperature window. We will align a practical fiber transition path.
Further reading
Product line
Fiber Box overview
See the commercial-format system already deployed across lanes.
Resources
Specs and technical docs
Download technical references, program sheets, and supporting material.
End of life
Circularity breakdown
See the direct EPS vs waxed corrugated vs fiber recovery reality check.