China Wholesale Frameless Glass Entry Door Factories & Suppliers

Zhejiang Shieldoors Security Technology: Industrial Leadership & Quality Ecosystem

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.

Structural Engineering & Glass Metallurgy Specifications

A true "frameless" glass entry door relies on heavy-gauge fully tempered or laminated safety glass acting as its own load-bearing structural diaphragm. Below is the technical breakdown required for architectural specification documents.

Glass Tempering & Heat Soak Safety (HST)

NiS (Nickel Sulfide) inclusions present in low-grade raw glass float can cause spontaneous breakage over time. Shieldoors subjects all high-rise and commercial entry door glass to mandatory Heat Soak Testing (EN 14179-1), accelerating potential phase transformations inside a heated chamber to ensure zero spontaneous breakage on-site.

B2B Purchasing & Quality Verification Protocol

Sourcing frameless glass entry doors overseas requires a clear quality assurance roadmap. To safeguard your investment, Shieldoors enforces a strict 4-stage inspection protocol during factory production:

• Raw Material Verification: Chemical composition testing of aluminum profiles and optical clarity inspection of float glass sheets prior to cutting.
• Dimensional & CNC Machining Tolerance: Laser inspection of hinge cutouts, patch fitting notch dimensions (tolerance tight within ±0.5mm), and edge straightness.
• Pre-Assembly Debugging: Every door system is mounted on standard debugging frames (as shown in our factory fleet photos) to calibrate swing clearance, closing speeds, and latching force.
• Export Container Packaging: Heavy-duty, fully enclosed wooden crates lined with high-density EVA foam corner protectors, vacuum-sealed plastic wrapping, and desiccant bags to prevent moisture damage during sea transport.