QF 316L Stainless Steel Insulated Lunch Box for Office Workers and Students, 24-Hour Long-Lasting Portable Food Container Bento Box

CN¥113.90

SKU: 100268132749

Status:In Stock (1)

ID: 100268132749

Weight: 940.00 g

Dims:198x180x168 mm

Specifications

Suitable Scenarios: Outdoor activities, commuting to work, refrigerator organization
Additional Components: Soup bowl, Bag included, Features handle, With tableware
Shape: Circular
Domestic/Imported: Made in China
Style: Simple style
Intended User Group: Universal, Infant & Mothers, Student, Children's
segmentation: undivided

Variants / Sale Attributes

Style: [1 Large 1 Small] Includes Utensils + Insulated Bag

Specification: [Original Purple Cap]

Package Contents

530ml lunch box *1, 730ml lunch box *1, stainless steel chopsticks *1, stainless steel spoon *1, insulated bag *1

Product Description

Overview

Brand: QF
Product Name: 316 Stainless Steel Detection Liquid; Stainless Steel Manganese Content Identification Liquid; Vacuum Insulated Lunch Box
Lunch Box Body: 316 Stainless Steel (antibacterial, corrosion-resistant, food-grade, easy to clean)
Lid: PP Plastic + Silicone
Available Stainless Steel Types: 316 Stainless Steel, 304 Stainless Steel

316 Stainless Steel Detection Liquid

Item	Detail

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Jieyang City Guangdong Province

Capacity

1-1.5L (included)

Material

316L stainless steel

Additional functions

Freezable, Refrigeratable, Vacuum insulation

Number of layers

2 layers

304 Stainless Steel Detection Liquid

Item	Detail
Turns Red	Non-304 Stainless Steel
Turns Green	Genuine 304 Stainless Steel

Additional details

Recommended Rating: ★★★★★

1. Polish the stainless steel surface.

2. Apply a drop of detection liquid.

3. Wait 1-3 minutes for color change.

4. Interpret results according to color indicators.

Additional details

Vacuum Insulation: 5-layer vacuum locking technology with high vacuum copper plating and electro-polished 316 stainless steel inner liner for long-lasting heat retention.
Vacuum Technology: High-temperature tail-free vacuum process enhances insulation by 34%.
Lid Design: Double-layer integrated lid with dual protection, heat insulation, and anti-scald features.
Sealing: Double sealing design with embedded silicone sealing ring and silicone air valve for pressure release; leak-proof even when inverted.
Construction: One-piece molded antibacterial 316 stainless steel inner liner, smooth polished surface for easy cleaning.
Durability: Thickened, impact-resistant, seamless inner liner; outer shell with brushed finish for wear resistance.

Heat Retention Performance

Item	Detail
4-hour test at room temperature 23°C with 100°C water	—
Rice	≥48.2°C
Vegetables	≥48.6°C
Soup	>56.0°C
6-hour test	—
Rice	>39.0°C
Vegetables	≥40.8°C
Soup	≥48.6°C

Capacity and Compartments

Item	Detail
Independent insulated compartments to prevent flavor mixing.	—
Small Bowl (Vegetables)	530ml
Medium Bowl (Meat)	530ml
Large Bowl (Staple Food)	730ml
Soup Bowl	730ml
Household Bowl	350ml

Additional details

Portability: Compact, easy to carry with hidden comfortable handle.
Suitable for: School, office, outdoor use, picnics, parties.
Additional Accessories: Insulated bags available in 2, 3, or 4-piece sets with triple-layer insulation (aluminum foil, thermal cotton, waterproof layer).

Anti-slip base for stable placement.

Additional details

Fabric: Stain-resistant, easy to clean.
Small Bowl: 9.5 cm diameter x 7 cm height
Large Bowl: 11.5 cm diameter x 11.5 cm height
Lunch Box Size: Approx. 28 cm x 19.4 cm x 14 cm (manual measurement error ±1-2 cm)
Insulated Bag Sizes: 2-pack, 3-pack, 4-pack options available

Antibacterial rate up to 99.9%

Food-grade materials safe for direct food contact

Corrosion-resistant and rust-proof stainless steel

Only vacuum insulated models are sold; non-vacuum plastic shell models are not recommended due to poor insulation.

Supports professional testing and verification with detection liquids.