Ultra-Light Clear Glass Lunch Box with Leak-Proof Lock and Microwave-Safe for Office Lunch Breaks

Product Description

Product Description

Premium Glass Food Container Series - Wholesale & B2B Solutions

Jianmei Glass was founded on a conviction that has guided every decision since day one: glassware that touches food should be held to the highest standard — not because regulations demand it, but because the people using our products deserve it.

Nestled in Xuzhou, a city in northern Jiangsu where glassmaking is woven into the local identity, our factory represents both heritage and progress. We honor generations of craftsmanship while investing relentlessly in modern automation, precision process control, and rigorous quality systems. ISO 9001:2015 certified for quality management. ISO 45001:2018 certified for worker health and safety. BSCI audited for ethical manufacturing. These aren't badges we collect — they're commitments we live by, verified by independent auditors and reflected in every product that leaves our loading dock.

But the real measure of our company isn't found in certificates. It's found in the distributor who has sourced from us for five years without a single quality dispute. The e-commerce brand that launched with our OEM products and scaled to seven figures. The supermarket buyer who switched to us after a competitor's inconsistent quality cost them returns and reviews. These relationships — built on reliability, transparency, and genuine partnership — are what Jianmei Glass stands for.

From our factory floor to your customer's kitchen, we believe in glassware that earns trust — and a manufacturer that earns yours.

Multi-Market Compliance — One SKU, Global Reach

1. Oven-Safe Cover — A Game-Changer The defining advantage of this bento box: the cover is oven-safe. Unlike standard glass containers where the lid must be removed before heating, this design allows the entire box — glass body and cover — to go directly into the oven for baking and reheating. Grill cheese on pasta. Brown a casserole topping. Reheat leftovers with the cover on to retain moisture. This single feature transforms a storage container into genuine oven-to-table cookware.

2. High Borosilicate Glass — Thermal Resilience Engineered with low thermal expansion borosilicate glass. Withstands -20°C to 150°C — safe for freezer storage, microwave reheating, oven baking, and dishwasher cleaning. No cracking from thermal shock. No warping from heat. No degradation over time.

3. Stackable, Space-Saving Design The rectangular body with precisely calculated draft angles allows multiple units to nest and stack securely — in the refrigerator, in the freezer, in cabinets, in lunch bags. Maximize storage density. Minimize clutter.

Lifecycle Value & Environmental Advantage

4. BPA-Free & Fully Certified Zero BPA, zero phthalates, zero toxins. Certified FDA, LFGB, CE/EU, RoHS, CIQ, EEC, CPSIA. Safe for baby food, children's meals, and daily family use. Factory certified ISO 9001:2015 and ISO 45001:2018, BSCI audited.

5. Three Shapes, Twelve Capacities Available in Rectangle (370/640/1040/1520ml), Square (320/520/800/1200ml), and Round (420/660/950/1300ml). One supplier, one quality standard, a complete product family for your retail shelf.

6. Leak-Proof Snap Locking System Four-side snap-locking clips + food-grade silicone gasket. Uniform sealing pressure. 24-hour inverted leak test — zero leakage. Carry soups, sauces, and liquids without worry.

7. Odor & Stain Proof Non-porous borosilicate glass surface. Does not absorb food odors. Does not stain from tomato, turmeric, or curry. Looks brand new after every wash.

Shape	Capacities	Stacking Behavior
Rectangle	370 / 640 / 1040 / 1520ml	Vertical nesting within shape; cross-capacity stacking with reduced height per tier
Square	320 / 520 / 800 / 1200ml	Compact footprint for dense storage; compatible with standard refrigerator shelf depths
Round	420 / 660 / 950 / 1300ml	Cylindrical nesting for rotational stability; ideal for soups, stews, and liquid-based meals

Parameter	Specificaion
Material	High-Borosilicate Glass (Premium Grade)
Thermal Resistance	Up to 150°C / Thermal Shock Resistance up to 120°C
Lid Material	BPA-Free Polypropylene (PP) with Silicone Seal
Certification	LFGB Certified
Safety Features	Oven-Safe, Microwave-Safe, Dishwasher-Safe, Freezer-Safe
Airtight Tech	4-Side Locking System with Industrial Silicone Gasket
Durability	High-Impact Resistance for Heavy-Duty Use

OEM & ODM

Full Customization, One Partner

We provide end-to-end OEM and ODM services for brands, distributors, and retailers:

What We Customize:

Logo: Screen printing (1–4 colors), laser engraving (permanent frosted mark), decal transfer (full-color photorealistic)
Lid Color: Standard 6–8 colors or Pantone-matched custom colors (10,000+ pcs)
Capacity & Dimensions: Custom mold development for unique sizes and shapes
Glass Finish: Crystal clear, tinted (amber/blue/green), or frosted matte
Packaging: Bulk cartons, retail color boxes, FBA-ready e-commerce packaging, rigid gift boxes
Accessories: Neoprene sleeves, utensil sets, carry bags, divider inserts
Development Timeline:

Brief & Feasibility (3–5 days) → 2. Mold Fabrication (20–35 days) → 3. Prototype Sampling (5–7 days) → 4. Sample Revision (1–2 rounds) → 5. Golden Sample Sign-Off → 6. Mass Production → 7. Pre-Shipment Inspection

Packaging & Shipping

Custom Packaging Solutions

Packaging That Works as Hard as Your Product

For the Wholesale Buyer: Clean, organized, professional. Every unit securely wrapped. Every carton clearly labeled. Every pallet stable for ocean transit. When your warehouse receives a Jianmei shipment, the unpacking is efficient, not chaotic. That's B2B professionalism, delivered in cardboard.

For the Retail Shopper: Three seconds on shelf to earn a customer's hand. Our retail packaging combines striking visuals with tactile quality — a matte finish that whispers "premium," a window that shows the crystal-clear glass, benefit callouts that answer questions before they're asked.

For the Online Customer: The unboxing moment is your brand's first physical handshake. Engineered protection that survives the journey. Clean, branded presentation on opening. No frustrating excessive plastic wrap. A smooth experience that earns five-star reviews and social media shares.

For the Gift-Giver: A bento box becomes gift-worthy when the packaging says "this is special." Rigid boxes. Soft-touch finishes. Elegant closures. When the recipient lifts the lid to reveal a beautifully presented glass bento box, your brand earns the association with quality and thoughtfulness.

Company Profile

Xuzhou Jianmei Glass Products Co., Ltd.

Xuzhou Jianmei Glass Products Co., Ltd. is a vertically integrated borosilicate glass manufacturer with a comprehensive quality management infrastructure certified to ISO 9001:2015 and occupational health and safety management certified to ISO 45001:2018. Located in Xuzhou, Jiangsu Province — a region with over four decades of concentrated glass manufacturing heritage — our facility combines traditional glassmaking expertise with modern automated production, precision process control, and data-driven quality assurance.

Our manufacturing operation covers the complete value chain: incoming raw material qualification (chemical composition verification via XRF, thermal expansion coefficient testing via dilatometry), automated high-temperature glass forming (1,200°C+ programmable burner arrays with precision-ground molds), continuous annealing (real-time temperature curve monitoring, residual stress < 5 nm/mm optical retardation), edge finishing (flame polishing for micro-crack elimination and seal surface flatness), 100% visual inspection under D65 standardized lighting, in-house decoration (screen printing, laser engraving, decal transfer with post-fire durability validation), lid injection molding and gasket compression molding, and packaging engineering tailored to the buyer's distribution channel.

Our product portfolio spans borosilicate glass bento boxes and lunch containers, food storage canisters, water bottles, drinking cups, and cosmetic packaging jars — supported by a daily output capacity of 100,000+ pieces across multiple parallel production lines. This capacity structure allows us to manage large-volume export orders, accommodate seasonal demand fluctuations, and support custom OEM/ODM projects without compromising lead time reliability.

We hold a complete certification portfolio: FDA 21 CFR for the United States, LFGB §§ 30+31 and EU Regulation 1935/2004 for European markets, CE/EU for product safety, RoHS 2011/65/EU for hazardous substance restriction, CPSIA for children's product compliance, CIQ for China export quality assurance, and EEC for food-contact article conformity. Our factory has successfully passed BSCI social compliance auditing, and we welcome third-party inspection by SGS, Bureau Veritas, or Intertek at the buyer's request.

Ethical & Sustainable Manufacturing

Our factory has successfully passed the BSCI (Business Social Compliance Initiative) audit, demonstrating our commitment to ethical manufacturing practices. BSCI certification covers fair wages, safe working conditions, reasonable working hours, prohibition of child labor and forced labor, and environmental responsibility. For European and North American buyers with corporate social responsibility (CSR) requirements, our BSCI compliance provides the necessary assurance that your supply chain meets international ethical standards.

In-Process Quality Control (IPQC)

Glass forming: Dimensional checks at regular intervals throughout each production shift
Annealing: Temperature curve monitoring to ensure proper stress relief in the glass
Lid assembly: Clip tension testing and gasket seating verification on statistically sampled units
Printing/decoration: Color accuracy measured against Pantone references; adhesion tested via cross-hatch tape test

Prototype Sampling

Mass Production

Pre-Shipment Inspection

First-article samples are produced for your evaluation and testing

Upon final sample sign-off, production begins with ongoing quality control and inspection

Final random sampling inspection (AQL 2.5 / 4.0 standard) before container loading

Trade Terms

Global sourcing only works when logistics are predictable. A great product stuck in customs or delayed at port is no product at all. At Jianmei, we've built our logistics around one promise: your shipment arrives when we say it will, in the condition we guaranteed.

Location Matters: Xuzhou sits at the crossroads of eastern China's transportation network. Within a day's trucking, we reach Shanghai, Ningbo, and Lianyungang — three of China's busiest container ports, offering frequent sailings to every major destination worldwide. This geographic flexibility means we can route your shipment through the port with the best combination of schedule, rate, and transit time.

The Right Shipment, The Right Way: Large-volume container order? FCL sea freight gives you the lowest per-unit cost. Smaller trial run? LCL consolidation keeps things economical without tying up capital in excess inventory. Urgent seasonal restock? Air freight gets products on shelf within 10 days. European buyer wanting a middle ground? The China-Europe Railway Express delivers in about two weeks at half the cost of air. We'll recommend the optimal mode, but the choice is always yours.

We Keep You Informed: From the moment your order enters production, you'll know where things stand. Production progress. Packaging completion. Container booking confirmation. Vessel departure. Estimated arrival. We communicate proactively because surprises in logistics are never good surprises.

If Something Goes Wrong: Despite everyone's best efforts, transit damage occasionally happens. When it does, we don't hide behind fine print. We respond quickly — providing photo documentation, facilitating inspection, coordinating replacements. Our track record of low damage rates (thanks to engineered packaging) means these situations are rare, but our response when they occur defines the quality of our partnership.

Mixed Orders Welcome: Building a product line? You don't need to fill a container with one SKU. Combine rectangular, round, and square lunch boxes. Mix capacities. Add water bottles or storage jars to the same shipment. One container. One set of documents. One arrival. Your product assortment, delivered together, ready for distribution.

FAQ

Q1: Are you a manufacturer or trading company?

A: Direct glassware factory have our own melting furnaces, production lines, and quality control team, not a middleman.Key value: Lowers price, ensures quality control, and faster communication
 
Q2: What certifications do your glassware products have?
A: All our glassware complies with EU CE, FDA, LFGB food contact safety standards. We also hold ISO 9001 quality management certification and BSCI social responsibility certification. Test reports are available upon request.
 
Q3: What types of glass do you use? (Soda-lime vs. borosilicate)
A: We primarily use high-quality soda-lime glass (most common for tableware, bottles) and heat-resistant borosilicate glass (for coffee mugs, laboratory ware, etc.). Borosilicate glass has a low coefficient of thermal expansion (3.3) and can withstand temperature changes from -20°C to 150°C.
 
Q4: Can you produce glassware in different colors, thicknesses, or capacities?
A: Yes. We offer clear, colored, frosted, or painted glass options. Custom specifications are available for OEM orders.
 
Q5: Do you offer OEM/ODM services? 
A: Yes, we specialize in OEM & ODM customization.
Options include:
Custom shapes/sizes (new mold development)
Logo printing (screen printing, decal, laser engraving)
Color customization (spray painting, electroplating)
Packaging design (custom boxes, labels, inserts)
 
Q6: What's the process for custom mold development?
A: 1) Send your design/drawing (AI/CDR format preferred)
     2) We provide a quotation and mold development time (typically 15-30 days)
     3) Sample approval
     4) Mass production. Mold cost is refundable if order quantity reaches 100000 pieces.
 
Q7: Can you print our company logo or design on the glassware?
A: Yes. We offer multiple logo application methods:
Screen printing: Best for simple designs, low cost, MOQ 2000pcs
Decal printing: For complex patterns, full-color, MOQ 5000pcs
Laser engraving: Permanent marking, ideal for premium products, MOQ 3000pcs
 
Q8: Can I get a sample before placing a bulk order?
A: Yes. Existing samples are available for 30-100 per piece (refundable with bulk order). Custom samples take 7-15 days (including mold cost if applicable).

Q9: Custom logo printing: MOQ 2000 pieces

New mold development: MOQ 5000-10000 pieces (varies by product)We can discuss lower MOQ for trial orders (with slight price adjustment).
 
Q10: How long does it take to get samples?
A: - Existing samples: 3-5 working days (after payment)
Custom samples: 7-15 working days (after design confirmation).
 
Q11: What quality control measures do you have in place?
A: Our QC process includes:
Raw material inspection (glass batch composition)
In-line inspection (wall thickness, shape, size)
Annealing process control (to eliminate thermal stress)
Final inspection (100% visual check for defects like bubbles, cracks, uneven rims).
 
Q12: What's your defect rate?
A: Our standard defect rate is ≤0.5% for first-class products. We replace or refund defective products found during pre-shipment inspection.
 
Q13: Do you accept third-party quality inspections?
A: Yes, we welcome inspections by SGS, Intertek, Bureau Veritas or your own QA team. We provide free access to our factory for inspection before shipment.
 
Q14: How do you pack glassware to prevent breakage during shipping?
A: We use export-standard safety packaging:
Inner: Bubble wrap, foam sleeves, or dividers for each piece
Outer: 5-ply corrugated cartons with reinforced corners
Optional: Custom retail boxes, display boxes, or pallets for FCL shipments.
 
Q15: Can you provide custom packaging with our brand?
A: Yes. We can produce custom color boxes, labels, and inserts with your logo and design. MOQ for custom packaging is 2000 pieces.
 
Q16: What shipping methods do you offer?
A: - Sea freight (FCL/LCL)(25-45 days transit)
Air freight: Faster delivery (5-10 days transit)
Express (DHL/FedEx/UPS): For samples or small urgent orders (3-5 days)
 
Q17: What's your return policy?
A: - Quality issues: We offer a full refund or replacement for products with manufacturing defects
Non-quality issues: Returns are accepted only with prior agreement and at the buyer's expense.
 
Q18: Is your glassware recyclable?
A: Yes, all our glass products are 100% recyclable and made from eco-friendly materials without harmful substances.
 
Q19: Do you use environmentally friendly production processes?
A: We have implemented energy-saving measures in our furnaces and waste water treatment systems to minimize environmental impact.