680ml 3-Grid Lunch Box | Lunch Box Factory - HongXing

304 Steel: The Hygiene Benchmark : Unlike plastic trays that absorb residual odors over time, the 304 stainless steel food surface is completely non-porous. It resists rust, staining, and bacterial adhesion — and cleans in seconds under running water. The stamped "304" logo on each tray is our quality guarantee, visible to the end consumer.

PP Shell: Precision Impact Armor : The virgin polypropylene outer body serves a dual engineering purpose — it absorbs impact during transit to protect the steel tray, and its low thermal conductivity insulates the exterior from the hot water injected into the base, keeping the outside safe to touch.

Silicone Seal: The Invisible Guardian : Food-grade silicone gaskets sit at every critical junction. Heat-resistant up to 200°C, they prevent liquid migration between compartments and maintain an airtight barrier that keeps flavors from crossing zones.

Lid Cutlery Vault : The lid surface features a precision-molded recess with a snap-on oval cover. The spoon and fork lie flat inside, fully enclosed and dust-proof. It eliminates the need for a separate cutlery pouch — and ensures your utensils are never forgotten at home.

Hot-Water Thermal Base : A sealed reservoir in the PP base accepts hot water through a dedicated port. As heat transfers through the steel tray, it warms food evenly from below — no electricity, no microwave, no power socket required. Ideal for school canteens, office desks, and outdoor use.

Retail Color Box : The 6-side high-definition color box features product photography, material callouts, and feature icons in English. It functions as a point-of-sale display unit on retail shelves, reducing the need for external merchandising investment.