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Energy-Saving Insulated Glass Doors
for Coolers, Freezers & Vending Machines

Premium manufacturer of high-performance glass doors with 95–99% argon retention, 10°C higher glass temperature, and up to 20% energy savings. Trusted by global refrigeration brands since 2013.

Explore Products Learn About Us
100,000+
Square Meters Industrial Park
1.2M+
Doors Produced Annually
150+
Employees & Engineers
50+
Countries Served

About Greendoor

Qingdao Greendoor Technology Co., Ltd. has been a leading manufacturer of glass doors for coolers, freezers, and refrigerators since 2013. With over 100,000 square meters of industrial space, 10 dedicated R&D engineers, and more than 150 employees, we specialize in high-performance, energy-saving insulated glass solutions.

Our advanced production lines include Glaston tempering furnaces from Finland and German warm-edge insulating technology, ensuring superior durability and thermal efficiency. We export to markets in Southeast Asia, the Middle East, North America, South America, Australia, and the EU.

  • 95–99% Argon Retention
  • 10°C Higher Glass Surface Temperature
  • Leak-Proof, Long-Lasting Seals
  • 20% Energy Savings with Heated Glass
Factory Production Glass Assembly Glass Tempering Quality Inspection

Our Premium Products

Discover our range of energy-efficient, durable, and innovative glass doors designed for commercial refrigeration, vending machines, wine cabinets, and more.

Energy Saving Cooler Glass

Energy Saving Cooler Glass

High argon-filled insulated glass with 95–99% retention rate. Reduces condensation and improves thermal efficiency.

Heated Glass Door

Heated Glass Door (20% Energy Saving)

Electric heated glass prevents fogging and ice buildup. Saves up to 20% energy compared to standard models.

LED Illuminated Glass

LED Illuminated Glass Door

Integrated LED lighting enhances product visibility and brand appeal in retail environments.

Frameless Glass Door

Frameless Glass Door

Sleek, modern design with minimal hardware. Ideal for high-end beverage coolers and wine cabinets.

Wine Cooler Glass Door

Wine Cooler Glass Door

UV-protected, low-E glass maintains optimal temperature and protects wine from light damage.

Vending Machine Glass Door

Vending Machine Glass Door

Durable, tamper-resistant glass with high clarity for product visibility and security.

Transparent LCD Screen Display

Transparent LCD Screen Display Door

Interactive glass with transparent display for digital advertising and dynamic branding.

Silk Screen & Ceramic Frit Glass

Silk Screen & Ceramic Frit Glass

Custom decorative patterns and branding with UV-resistant ceramic frit printing.

Walk-in/Reach-in Display Cabinet Glass

Walk-in/Reach-in Display Cabinet Glass

Heavy-duty insulated glass for large commercial refrigeration units with superior sealing.

Why Choose Our Glass Doors?

Energy Efficient

Up to 20% energy savings with heated glass and high argon retention. Lower operating costs and environmental impact.

Durable & Leak-Proof

Advanced warm-edge sealing and tempered glass construction ensure long-term performance and reliability.

Innovative Design

From frameless to LED-illuminated and transparent LCD, we offer cutting-edge solutions for modern retail.

Frequently Asked Questions

What is the advantage of 95% high argon filling in glass doors?

Argon gas reduces heat transfer, improves insulation, prevents condensation, and increases energy efficiency by maintaining stable internal temperatures.

How does heated glass save energy?

Heated glass prevents fogging and ice buildup, allowing the refrigeration system to operate more efficiently and reducing compressor workload by up to 20%.

Do you offer custom sizes and designs?

Yes, we provide OEM/ODM services with custom dimensions, frame types (PVC, aluminum, stainless steel), and decorative finishes including silk screening.

What markets do you export to?

We export to Thailand, Vietnam, Malaysia, Indonesia, India, Pakistan, Saudi Arabia, Mexico, Brazil, Canada, Australia, and EU countries.

Get in Touch

Ready to upgrade your refrigeration units with energy-saving glass doors? Contact us today for quotes, samples, and technical support.

Qingdao Greendoor Technology Co., Ltd.

B1018, Jinhainiu Industrial Park, No.700 Qingshan Rd, Licang Dist, Qingdao, China

Phone: 0086-15266233186

WhatsApp: 0086-15266233186

Email: [email protected]

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