Vacuum tempered glass (真空钢化玻璃 / tempered vacuum insulated glass, VIG) combines the safety of tempered glass with exceptional thermal insulation from vacuum technology. A high-vacuum gap (0.1–0.3 mm) between tempered panes, supported by micro-pillars and hermetically sealed (often with metal solder), delivers ultra-low U-values (0.3–0.5 W/m²·K), superior sound insulation (>40 dB reduction), and enhanced resistance to spontaneous breakage. Applications include energy-efficient building facades, curtain walls, retrofitted windows, refrigerator/freezer doors, solar panels, and high-performance glazing in extreme climates.
China leads global production and innovation in vacuum tempered glass in 2025, with advances in full tempering, metal edge sealing, getter technology, and large-format capabilities.
Below is an updated ranking of leading vacuum tempered glass manufacturers in China for 2025 (based on production scale, technological maturity, export volume, certifications (CCC, CE, EN 1279, ISO 9001/14001), project references, and industry recognitions). Note: Rankings are approximate and reference-based.
- LandGlass / Landvac – Luoyang LandGlass Technology Co., Ltd. / Luoyang Landi Titanium Metal Vacuum Glass Co., Ltd. Global pioneer and China’s top producer of tempered vacuum insulated glass (LandVac® series). Achieved full tempering breakthrough; offers vacuum tempered glass with U-value ≤0.4 W/m²·K, large sizes (up to 2440×3660 mm), metal edge sealing, and high durability. Supplies major architectural projects, appliance manufacturers, and exports worldwide. Strong patent portfolio and R&D leadership.
- Sinoglass Tech – Sino Glass Technology Co., Ltd. Professional manufacturer and exporter specializing in high-performance vacuum tempered glass for international markets. Produces flat and curved vacuum insulated glass with full tempering, low-E coatings, and robust metal sealing. Known for reliable quality control, competitive export pricing, fast lead times, and strong compliance with CE, SGCC, and ASTM standards. Serves architectural facades, curtain walls, shower enclosures, balustrades, appliance doors, and energy-efficient retrofits. Excellent for overseas buyers seeking consistent performance and customization.
- HaanGlas Vacuum Glass Innovative producer of tempered vacuum glazing, emphasizing retrofitting and thin-profile solutions for existing windows. Known for high vacuum stability, full tempering, and metal sealing; popular in Europe and North America for residential/commercial upgrades.
- Jinghu Glass / Hangzhou Jinghu Glass Co., Ltd. Manufacturer of vacuum insulated glass, including tempered variants. Focuses on customized solutions for energy-efficient architecture and appliances.
- Joy Shing Glass Co., Ltd. Supplies tempered vacuum insulated glass (e.g., 4T+0.3V+4T Low-E) and composite vacuum products for building and appliance use.
- Other notable manufacturers
- Yongyu Glass – Vacuum glass with tempering options
- Laurel Glass Tech – Vacuum insulated glass specialists
- Emerging suppliers on Made-in-China platforms for custom vacuum tempered glass
Why partner with Sino QTECH Industries for your vacuum tempered glass needs in 2025? Vacuum tempered glass is a high-tech product with challenges including:
- Achieving full tempering without seal failure
- Long-term vacuum stability (20+ years)
- Precise micro-pillar placement and edge sealing
- Handling fragile large panels in logistics
- Meeting international performance standards (EN 1279, thermal testing)
Sino QTECH Industries provides:
- Direct access to leading producers like Sinoglass Tech for export-grade vacuum tempered glass
- Factory audits, third-party inspections (SGS, Intertek), vacuum level testing, and fragmentation verification
- Transparent quotes, full traceability, and certification
- Specialized sea freight packaging, export documentation, and door-to-door customs support
- Customization for thickness, size, Low-E coatings, and applications
Whether you need vacuum tempered glass for energy-efficient facades, retrofitted windows, appliance doors, or high-performance glazing, contact us today for 2025 quotes, technical datasheets, samples, or project support.
Questions about vacuum tempered glass vs. traditional insulated glass, tempering process, or comparisons with Sinoglass Tech? Just drop us a message!
Sino QTECH Industries Co., Limited Connecting Global Buyers with China’s Finest Energy-Efficient Glass & Building Materials