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How to Keep Cargo Fresh on Long‑Haul Routes? SUNHUNK 3L Refrigerated Box Has the Answer!
Column: NEWS Release Time: 2026.03.24

Want better performance, attractive appearance and higher profits?


Advanced open‑cell foaming technology



Fully automatic open‑cell foaming process ensures evenly distributed insulation without cavities or bubbles, delivering flat panels and excellent thermal performance.


Larger load capacity, higher economy




More than 500 kg lighter than traditional steel boxes. Larger internal volume allows more cargo, solving loading concerns for drivers.


Robust overall structure



Unique riveted locking design prevents deformation under heavy loads. It improves transportation reliability and efficiency, helping drivers carry more and earn more under intensive working conditions.



Optimized cold air circulation



Great‑wall shaped ventilated floor rails, paired with vertical grooves on side panels and vertical strips on doors, enhance air circulation and uniform temperature inside. Ideal for safely transporting fruits, vegetables and flowers.