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Low-E Insulated Glass Units from China Suppliers - Factory Direct Thermal Performance Solutions
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Low-E Insulated Glass Units from China Suppliers - Factory Direct Thermal Performance Solutions

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Glaspedia Low Emissivity (Low e) Insulated Glass Units (IGUs) are expertly crafted to enhance thermal efficiency while ensuring maximum transparency and comfort. Our IGUs, manufactured in China, incorporate two or more glass panes separated by spacers and are hermetically sealed to create a cavity filled with insulating air or inert gas. As a leading supplier and factory of high-quality IGUs, we prioritize innovation and sustainability to meet the demands of modern architecture.

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Product Details

Key Performance Features
Low-E Coating

Vacuum sputtered low-e coatings applied to the glass surface reduce infrared heat transfer while allowing visible light to pass through.

Thermal Insulation

The sealed cavity, often filled with air or argon gas, minimizes heat conduction and improves U-value performance.

Energy Savings

Reduced heat gain in summer and heat loss in winter lowers HVAC demand, contributing to long-term energy efficiency.

Comfort & Condensation Control

Improved indoor temperature stability and reduced condensation on interior surfaces.

Low-e IGU is manufactured to comply with global safety and performance standards, ensuring reliability across diverse markets:

  • ASTM E2190 USA — Defines IGU durability and performance, testing seal integrity, moisture resistance, gas retention, and fogging prevention.
  • IGCC/IGMA USA/Canada — Certification program ensuring IGUs meet ASTM E2190 requirements through audits, sample testing, and long-term performance verification.
  • EN 1279 Europe — Governs IGU performance, covering moisture penetration, gas leakage, mechanical strength, optical quality, and thermal insulation durability.
  • AS/NZS 4666 Australia/New Zealand — Establishes IGU requirements for durability, moisture resistance, gas retention, and long-term thermal performance in buildings. By adhering to these standards, South Star ensures its laminated glass solutions meet international benchmarks for safety, durability, and sustainability, making them suitable for both local and global projects.
Your Trusted Partner

Glaspedia is recognized as a reliable supplier of Low-E IGUs for major commercial and residential developments in Hong Kong and beyond.

At 470 Hennessy Road in Hong Kong, South Star supplied both Low‑E IGUs and BIPV IGUs for the landmark commercial tower, integrating renewable energy generation while ensuring high energy efficiency and full compliance with stringent façade performance requirements.

At The Henley, Hong Kong, Glaspedia's flat and curved Low‑E IGUs provide superior thermal comfort and sustainability, meeting the demands of modern living in a dense metropolitan environment. The uniform coating color across both flat and curved units ensures optimal façade aesthetics and architectural consistency. These projects highlight South Star's ability to deliver high-performance glazing solutions that meet both architectural vision and regulatory demands.

Beyond energy efficiency, South Star enhances IGUs by integrating laminated glass technology. This combination provides:

  • Safety: Laminated layers ensure impact resistance and fragment retention, meeting international safety codes.
  • Security: Enhanced resistance to penetration for façades.
  • Design Flexibility: Options for acoustic interlayers, decorative printing, or BIPV integration expand architectural possibilities.
South Star LowE Insulated Glass Units represent the convergence of energy efficiency, safety, and sustainability. With proven performance in landmark projects such as 470 Hennessy Road and The Henley, and the ability to combine lamination with IGUs, South Star continues to deliver glazing solutions that meet the evolving demands of modern architecture and urban development.
Frequently Asked Questions
Q What is a Low-E IGU and how does it work?
A Low-E Insulated Glass Unit (IGU) consists of two or more glass panes separated by a sealed cavity filled with air or argon gas. A vacuum-sputtered low-emissivity (Low-E) coating is applied to the glass surface to reflect infrared heat while allowing visible light to pass through, resulting in improved thermal performance and reduced energy consumption.
Q What international standards do Low-E IGUs need to comply with?
Low-E IGUs must comply with various regional standards depending on the market: ASTM E2190 and IGCC/IGMA certification in the USA and Canada, EN 1279 in Europe, and AS/NZS 4666 in Australia and New Zealand. These standards cover seal integrity, moisture resistance, gas retention, optical quality, and long-term durability.
Q How do Low-E IGUs contribute to energy savings in buildings?
By reducing heat gain in summer and heat loss in winter, Low-E IGUs significantly lower the demand on HVAC systems. This leads to reduced electricity consumption, lower utility bills, and a smaller carbon footprint — making them an ideal solution for energy-efficient building design.
Q Can Low-E IGUs be combined with laminated glass technology?
Yes. South Star integrates laminated glass technology into its IGU products to provide additional benefits including impact resistance, fragment retention for safety, enhanced security against penetration, and design flexibility with options for acoustic interlayers, decorative printing, or BIPV (Building-Integrated Photovoltaics) integration.
Q What landmark projects have used South Star's Low-E IGUs?
South Star's Low-E IGUs have been used in major Hong Kong projects including 470 Hennessy Road — a landmark commercial tower featuring both Low-E and BIPV IGUs — and The Henley, a residential development utilizing flat and curved Low-E IGUs that deliver superior thermal comfort, aesthetic consistency, and sustainability compliance.
Q How do Low-E IGUs improve indoor comfort and reduce condensation?
Low-E IGUs help stabilize indoor temperatures by minimizing heat transfer through the glass. This reduces temperature differences between the glass surface and indoor air, which in turn significantly lowers the likelihood of condensation forming on interior surfaces — improving comfort and preventing moisture-related issues in buildings.