Explore our certified commercial and residential Low-E entry systems, hurricane-rated fenestration products, and thermal break aluminum doors designed for rigorous international building standards.
Zhejiang Shieldoors Security Technology Co., Ltd. was established in 2016 and is located in an expansive 45,000 m² production base. Building on 10 years of industry leadership and 6 years of international trade experience, the company generates an annual export revenue reaching USD 42,000,000.
Our commitment to excellence is maintained through rigorous ISO9001-certified quality control and third-party product testing methods, including CE, UL fire-rated, and hurricane-impact certifications. A dedicated quality inspection team of 78 QC specialists ensures that every entry door meets international safety standards. Working with a robust ecosystem of 1,400 supply chain partners, our trade background covers direct export, project bidding, and global supply chain integration, mainly targeting key markets in North America, Australia, and Southeast Asia.
Innovation is at the heart of our operations. Supported by 350 skilled R&D engineers, we launched 450 new product designs last year. We serve major real estate developers, architectural firms, and building material retail chains by offering tailored customization options ranging from soundproofing and thermal insulation features to smart lock integration and custom panel finishes.
Low-Emissivity (Low-E) glass front doors represent the zenith of modern building envelope technology. By applying microscopically thin, non-toxic metallic oxide coatings directly onto float glass via Magnetron Sputtering Vacuum Deposition (MSVD), our low-E glass assemblies reflect long-wave infrared thermal radiation while permitting maximum visible light transmittance (VLT).
Achieving U-factors as low as 0.22 BTU/h·ft²·°F (1.25 W/m²K), our dual and triple-pane insulated glass units (IGU) drastically curb thermal conduction, retaining indoor thermal energy during freeze cycles while minimizing HVAC energy loads.
With Solar Heat Gain Coefficients (SHGC) engineered between 0.18 and 0.35, our doors selectively block destructive ultraviolet rays (UV-A and UV-B) and solar heat, protecting luxury interior wood, artwork, and furniture from solar degradation.
We utilize high-grade PA66 GF25 (25% glass fiber reinforced polyamide) structural thermal break struts. This prevents heat bridging across the heavy-duty extruded aluminum alloy frame profile, eliminating perimeter condensation.
| Glazing System Configuration | U-Factor (US/Imperial) | SHGC Rating | VLT Transmission | Acoustic Rating (STC) |
|---|---|---|---|---|
| Double Low-E + Argon Gas (Standard OEM) | 0.28 BTU/h·ft²·°F | 0.30 | 68% | 35 dB |
| Triple Low-E + Dual Krypton Gas (Passive House) | 0.17 BTU/h·ft²·°F | 0.22 | 58% | 42 dB |
| Laminated Low-E + Hurricane Impact (NOA Certified) | 0.25 BTU/h·ft²·°F | 0.26 | 62% | 45 dB |
| Vacuum Low-E (VIG) Hybrid Architecture | 0.11 BTU/h·ft²·°F | 0.20 | 65% | 48 dB |
The international demand for high-performance Low-E front entry door systems is undergoing unprecedented growth driven by stringent energy efficiency mandates, zero-carbon building standards (such as Title 24 in California and the EU Energy Performance of Buildings Directive), and rising climate volatility.
In North America, demand centers on NFRC-certified, Energy Star V7.0 compliant double and triple glazing. High demand for coastal Miami-Dade Florida Building Code (FBC) High-Velocity Hurricane Zone (HVHZ) compliant laminated impact entry systems is pushing structural specs to +/- 80 PSF design pressure limits.
The European continent demands Passive House Certified U-values (Uw ≤ 0.8 W/m²K). Commercial developers prioritize ultra-narrow thermal break aluminum profiles combined with triple silver Low-E soft coatings and warm-edge TGI spacer bars to meet strict decarbonization roadmaps.
Rapid urbanization and luxury hospitality construction across Australia, Southeast Asia, and the GCC countries demand thermal isolation to combat extreme ambient heat and humidity. Focus centers on solar heat rejection, dynamic tinted smart glass, and heavy-duty anti-corrosion anodized frames.
Operating across a state-of-the-art 45,000 m² smart facility, Zhejiang Shieldoors Security Technology Co., Ltd. implements full-cycle vertical manufacturing. From aluminum extrusion processing to computer-controlled automated insulating glass units (IGU) assembly, every phase is engineered to zero-defect precision.
To address global structural trends, our 350 R&D engineers focus on pioneering breakthroughs across four key architectural vectors:
By evacuating the air cavity between glass panes to a high vacuum (10⁻⁴ Pa), conductive and convective heat transfer is virtually eliminated, yielding thermal performance equivalent to solid brick walls in ultra-slim profiles.
Seamless integration of dynamic electrochromic coatings allowing users and smart building management systems (BMS) to alter tint levels dynamically from clear to 99% privacy opacity via low-voltage signals.
Standardizing 3D facial recognition, biometric fingerprint scanning, encrypted RFID, and motor-driven multi-point locking systems embedded directly within concealed aluminum stiles.
Explore our secondary series of engineered tilt-and-turn windows, heavy-duty commercial sliding doors, awning systems, and custom structural glass configurations.
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