Zero Thermal Degradation: LEADUS Vacuum Insulating Glass Passes Comprehensive CTC Durability Testing

Can advanced thermal insulation materials withstand multi-decadal environmental stress without performance loss? Hebi Leadus Manufacturing Co., Ltd. ("LEADUS") today announced official performance validation from China Testing & Certification International Group Co., Ltd. (CTC). Following rigorous accelerated aging protocols—including high-intensity UV radiation, thermal cycling, and low/high temperature shocks—LEADUS Vacuum Insulating Glass (VIG) recorded an absolute thermal transmittance change of zero (ΔU = 0 W/(m²·K)), demonstrating exceptional weather resistance and long-term sealing integrity.

Industry Background: As global decarbonization mandates accelerate, ultra-low energy buildings and Passive House standards demand uncompromised long-term reliability from building envelope systems. Vacuum insulating glass represents the peak of thermal insulation technology, where edge-seal durability and permanent vacuum maintenance dictate the actual energy savings over a building's lifespan. Verifying environmental durability through top-tier independent testing is essential to establishing engineering trust and commercial scalability.

Testing Details & Methodology: The evaluations were conducted by the China National Safety Glass & Quartz Glass Test Center (CTC) pursuant to national standards GB/T 38586-2020 and GB/T 10295-2008. Test specimens measuring 300 mm × 300 mm × 8.2 mm (Configuration: 4 Low-E(D80) + 0.2V + 4C) underwent a multi-month environmental stress testing regimen. CTC's laboratories deployed specialized heat flow apparatus, UV radiation chambers, and climate cycle environmental chambers to subject the specimens to extreme artificial weather conditions.

Results: According to official Test Report No. WT2025E09A00265E, the mean thermal transmittance (U-value) stood at 0.54 W/(m²·K) prior to testing and remained unchanged at 0.54 W/(m²·K) after the complete accelerated aging series. The absolute change ΔU of 0.00 W/(m²·K) confirms zero thermal degradation, earning full regulatory compliance. The result proves that LEADUS's structural sealing maintains complete integrity under severe thermal and radiative fatigue.

Significance & Strategic Outlook: Receiving CTC's authoritative certification reinforces LEADUS's position as a trustworthy partner for net-zero architectural projects, high-performance curtain walls, and retrofits globally. Moving forward, LEADUS will continue expanding collaboration with international testing bodies and industry pioneers to advance high-durability glazing technologies for sustainable urban development.