The All-Purpose Cooler Box Built for Deep-Sea Catches, Seafood Cold Chain, and Heavy-Duty Outdoor Use

Model: NL-240 Rotomolded Cooler Box | Capacity: 240QT (approx. 227L) | Material: Food-Grade LLDPE + High-Density PU Foam

I. Exclusive In-House Design and R&D — Our Proprietary Mold Is Our Moat

The NL-240 is Ningbo Nelgreen's independently designed, developed, and tooled flagship model. Currently, no identical product is sold domestically in China.

Unlike the many generic, mold-shared cooler boxes flooding the market, every aspect of the NL-240 — from its shell structure and functional layout to ergonomic details — is an original design. The rotomolding mold was developed entirely in our own factory, producing a single, seamless, one-piece shell with no welds or seams, eliminating the stress cracking and leakage risks common to injection-molded boxes. This means what you receive isn't a generic product available from anywhere, but an exclusive item backed by a proprietary mold barrier with long-term, stable supply — the most direct form of protection for brand buyers seeking to build a differentiated product line.

II. Functional Design Built for Catch and Cold Chain

Every design detail of the NL-240 has been repeatedly validated in real working scenarios (factory-shot product demonstration videos available):

• 3 T-Shaped Rubber Latches: Positioned at three points on the lid for even pressure, working with a thick black sealing gasket around the rim to form a reliable pressure-sealed structure — no loosening or cold-air leakage during long-distance transport, with splash and dust resistance.
• Molded Fish Measuring Ruler on Lid: The scale is molded directly into the lid, letting anglers measure their catch on the spot without carrying separate tools — a built-in ruler for every fishing trip.
• Round Cup Holder on Lid: A convenient spot to set down a drink during breaks, useful on both fishing boats and at campsites.
• Recessed Wheels: Molded directly into the base, allowing one person to easily pull the box even when fully loaded at 42kg — effortless transport across warehouses, docks, and decks.
• Side Folding Heavy-Duty Handles: Fold out for lifting, fold away when not in use — combined with the wheels for dual-mode "pull or carry" mobility.
• Bottom Drain Valve with Tether Plug: A metal chain keeps the plug attached to the box so it's never lost after draining — making cleaning, water changes, and meltwater drainage quick and convenient.
• Spacious, Flush Interior: The wide-mouth, deep-cavity design accommodates whole fish, cases of beverages, or portioned seafood, with smooth interior walls that are easy to rinse and meet food-hygiene handling standards.

III. Technical Specifications

IV. Source Factory — Every Process Under One Roof

Nelgreen is an integrated manufacturing-and-trading rotomolding source factory. The complete production chain for the NL-240 — raw materials, rotomolding, PU foaming, trimming, assembly, cleaning and inspection, and packaging — is carried out entirely in our own workshop:

• Rotomolding Line: A full set of equipment including rock-and-roll rotomolding machines, foaming machines, and drying rooms, ensuring even wall thickness and batch-to-batch consistency;
• Quality System: ISO 9001 quality management certification plus BSCI social compliance audit, giving export quality a documented track record;
• Service Response: 5/5 storefront rating on international B2B platforms, replies within 1 hour, on-time shipment rate ≥96%, 4 years of export experience, and convenient shipping via nearby Ningbo Port;
• Quality Inspection Footage: A real inspection video is recorded and archived for every batch prior to shipment and can be provided to customers (filmed live at the factory).

V. Multiple Sizes, Colors, and Full Customization

The NL-240 is available in customizable colors and supports full OEM/ODM customization — logo branding, exclusive color schemes, spec adjustments, and packaging solutions can all be developed on request. With multiple sizes and styles available, the same mold platform can be adapted to different capacity ranges and feature combinations to meet the diverse needs of different markets.

VI. Application Scenarios

Deep-sea and coastal fishing boats | Seafood catching, processing, and transport | Fresh food cold-chain delivery | Heavy-duty camping and outdoor expeditions | Hunting trips | Catering, bar, and banquet cold chain | Medical sample transport | Gardening and fruit storage/transport

Inquiries & Customization: Feel free to leave a message on our official website or contact us directly for NL-240 samples and full-container quotations.