3R Box
Calcium Carbonate + PE Composite

The Box That Doesn't Fail When It Gets Wet

Waterproof corrugated packaging for seafood, produce and cold chain — no wax, no PFAS, no EPS.

  • No wax
  • No PFAS
  • No EPS
  • Prints like paper
  • Same packing line
Request Free Samples Book a Side-by-Side Test

Start with one box size, one route, and one real shipping test.

Stack of five wax-free waterproof seafood corrugated boxes resting on crushed ice

Ice water

Wet contact

0–4 °C

Refrigerated

90%+ RH

Cold storage

0%
Wax or PFAS coating in the material
72h+
Wet strength retained at 85–95% humidity
10-high
Pallet stacking after long-haul sea freight
35 days
Typical export routes covered end to end

Indicative figures from internal testing — full test reports available on request.

The real risk

The Box Is Never the Expensive Part

Damaged cargo, claims and rejected shipments are.

Wax fails unevenly

Coating varies by batch. Wet performance you cannot predict.

Paper goes soft

Ordinary cartons lose most of their strength within hours of getting wet.

EPS is being banned

Bulky, unprintable, bead debris — and restricted in a growing list of markets.

The claim costs more

One rejected seafood shipment outweighs years of box savings.

3R Box Prime Meat cold storage package with beef on ice

Outer liner

CaCO₃ + PE composite

Fluted core

Corrugated structure

Inner liner

Non-absorbing surface

Product solution

Waterproof by Material, Not by Coating

Stone-based composite board. The water resistance is inside the material, so there is no coating left to fail.

  • Waterproof, not coated

    Nothing to crack, flake or vary between batches.

  • Holds shape when wet

    Ice water, condensation, 90%+ humidity cold storage.

  • Drops into your line

    Same corrugated format, same equipment, no retraining.

  • Prints like premium paper

    Full-colour brand graphics, QR codes and labels.

Request Material Details
  • Custom dimensions available
  • Material disclosure on request
What you get

Three Certainties, Not Three Promises

01

It arrives intact

Wet strength that holds

No softening or stack collapse in refrigerated transit and ice contact.

02

It switches easily

Built to your current box size

Start with one size, one route, one test batch.

03

It passes review

PFAS-free, EPS-free, documented

Food-contact papers and market disposal guidance on request.

About 3R

Built on 30+ Years of Packaging Experience

Guangzhou 3R Green Packaging Technology Co., Ltd. specializes in high-performance, sustainable packaging solutions for seafood, fruits, vegetables, and cold-chain logistics.

Combining innovative technologies with over 30 years of experience in the packaging industry, we develop waterproof, moisture-resistant, and compression-resistant packaging solutions for global buyers.

30+ years in packaging

Deep manufacturing and supply-chain expertise behind every box.

Built for global buyers

Solutions developed for seafood, fruits, vegetables and cold-chain export routes.

Tested performance

Waterproof, moisture-resistant and compression-resistant by material design.

Where it works

Wet, Cold, High-Value Shipments

Seafood ExportPriority use case

Seafood Export

  • Ice water
  • 20+ day transit
  • Heavy stacking

Crab, shrimp, salmon, shellfish — cargo where one failure erases the margin.

Fresh E-CommerceIdeal scenario

Fresh E-Commerce

  • Branding
  • Ice packs
  • Doorstep unboxing

A waterproof box that still looks premium when the customer opens it.

Wholesale & Cold StoragePriority use case

Wholesale & Cold Storage

  • 90%+ RH
  • Stacking
  • Daily handling

Pallets that stay standing through long, humid storage cycles.

Produce Cold ChainIdeal scenario

Produce Cold Chain

  • Hydrocooling
  • Condensation
  • Sea freight

Survives direct water contact before packing and moisture in transit.

Send us your box size and route. We'll quote a match.

Discuss Your Application
  • Side-by-side comparison supported
  • Small-batch tests supported
  • Response within 24 hours
Cost logic

Do Not Only Compare Box Price. Compare the Cost of Failure.

In cold chain packaging, the cheapest box is not always the lowest-cost solution. For seafood, fresh produce, and premium grocery shipments, packaging failure can create product loss, customer claims, returns, rejected shipments, and brand damage.

True packaging cost model

True Packaging Cost=Box Price+Damage Risk+Claims+Returns+Brand Loss
Slightly higher box cost
Lower packaging failure risk
Reduced claim probability
Better branded presentation
More predictable cold chain performance
  • Executive-ready cost breakdown
  • Response within 24 hours
Calculate Your Packaging Risk