Explore our engineered door and window assemblies rigorously manufactured to meet structural, acoustic, and hurricane-impact specifications across North America and Europe.
Established in 2014, Grandex Door Solutions Co., Ltd. is a premier architectural entry door manufacturer operating from a modern 35,000 m² smart manufacturing facility. Grounded in 16 years of deep-rooted industry expertise and 8 years of dedicated export experience, our organization generates an annual export revenue of USD 28 million. Supported by robust OEM and ODM contract manufacturing backgrounds, our structural glazing and entry systems serve real estate developers, architectural specifiers, and tier-1 building product distributors across North America and Western Europe.
Quality assurance is structurally integrated into our workflow: governed by rigorous ISO 9001 certified internal protocols and validated by internationally accredited third-party laboratories (including NFRC, Intertek, and CSA), our 45-member QA team performs 100% full-process dimensional and load verification. Driven by an active R&D division housing 85 specialized hardware and envelope engineers, Grandex launched 120 new architectural door and window designs last year alone, offering full-spectrum customization spanning thermal break profiles, intelligent multi-point access locks, multi-layer Low-E insulated glass units (IGUs), and high-durability fluorocarbon surface treatments.
Grandex operates an end-to-end automated manufacturing ecosystem. By replacing conventional fragmented fabrication with centralized CNC processing centers and automated logic sorting, we guarantee absolute precision tolerance (within ±0.3mm) across high-volume commercial runs. Our vertical supply integration ensures rapid lead times, direct traceability of raw T6-6063 aluminum billets, and seamless execution of complex architectural specifications.
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Sawing
Milling
CNC Milling
CNC Drilling
CNC Center
Cutting
Intelligent Sorting
Checking & Packing
Sawing Machine
Milling Machine
CNC Milling Machine
CNC Drilling Machine
CNC Center Machine
Double Head Cutting Saw
Intelligent Sorting Line
Semi-Finished QC
Performance Tester
As dynamic architectural design shifts toward grand visual openness, high thermal performance, and zero-carbon building envelopes, modern glass front door manufacturing requires continuous materials science innovation. Grandex’s engineering roadmap focuses on integrating advanced thermal breaks, smart glazing technologies, and structural security enhancements.
To satisfy stringent Passive House standards (U-factor ≤ 0.8 W/m²K), our engineering team utilizes Technoform multi-cavity polyamide (PA66GF25) thermal break strips filled with silica aerogel insulation. This breaks thermal bridging across aluminum framing, preventing condensation and drastically cutting heating/cooling energy loads.
Next-generation entry systems incorporate Electrochromic Smart Glass that dynamically adjusts tint according to solar radiation intensity or user privacy settings. Furthermore, our development of ultra-thin Vacuum Insulated Glass (VIG) provides the thermal performance of a 50mm triple-glazed unit within a slim 10mm structural profile.
Modern luxury entryways demand frictionless access control. Our glass front doors feature concealed motorized multi-point lock systems compatible with 3D facial recognition, biometric fingerprint scanning, encrypted RFID, and smart home automation platforms (Zigbee, Z-Wave, Matter protocol).
Every architectural typology presents distinct structural and environmental demands. Grandex provides engineered fenestration solutions customized to specific regional codes, wind load ratings, and building functions.
For high-end residential architecture requiring floor-to-ceiling glass expanses, we produce ultra-slim profile pivot doors and bi-folding glass assemblies capable of supporting single leaf weights up to 400kg while maintaining effortless, finger-touch operation via heavy-duty stainless steel quad-rollers.
Designed for luxury hotels, office towers, and mixed-use commercial entrances, our heavy-duty storefront doors incorporate commercial panic push-bar hardware, ADA-compliant low thresholds, continuous hinges, and high-frequency automated swinging actuators.
Engineered specifically for coastal exposure (e.g., Florida HVHZ standards), our impact-rated modern glass doors use SentryGlas® (SGP) laminated interlayer glass and reinforced 6063-T6 aluminum profiles designed to resist design pressures exceeding ±90 PSF and missile level D windborne debris impact.
Navigating regional building codes and import compliance requires deep technical expertise. Grandex guarantees full regulatory alignment across key export markets through comprehensive testing and localized engineering documentation.
Our North American structural assemblies comply strictly with NAFS (North American Fenestration Standard), NFRC thermal performance ratings (U-factor, SHGC, VLT), and Florida Building Code Notice of Acceptance (NOA / FPA) certifications required for high-velocity hurricane zones.
Tested rigorously in accredited laboratories, our windows and doors comply fully with AS2047 (Windows and External Glazed Doors in Buildings) and AS1288 glass selection standards, ensuring high air infiltration resistance, water penetration tightness (up to 600Pa), and structural integrity.
All European supply runs carry full CE marking under EN 14351-1. We offer thermal insulation configurations that achieve Passive House Institute certification, ensuring compliance with strict European energy efficiency mandates.
As a trusted OEM/ODM manufacturing partner to over 1,200 commercial entities worldwide, Grandex offers structured procurement frameworks designed to minimize total cost of ownership (TCO), prevent jobsite delays, and streamline large-scale architectural procurement.
Our 85-member engineering team provides pre-construction BIM (Revit) objects, 2D/3D CAD shop drawings, and structural calculation reports to assist architectural firms during the schematic design and specification phase.
To guarantee damage-free transit across global sea lanes, products are packed using fully enclosed wooden crates, corner guards, protective polyethylene wrap, and steel-reinforced pallet bases optimized for maximum 40HQ container volumetric loading efficiency.
Every enterprise contract is assigned a dedicated project manager and fenestration engineer to oversee factory-floor QC checks, milestone updates, dynamic hardware sourcing, and post-installation technical guidance.
Expert answers to common engineering, structural, and procurement inquiries for modern glass front door systems.
Browse our extended suite of high-performance hurricane-rated doors, single-hung assemblies, and slim-frame acoustic sliding solutions engineered for global export.
Grandex Door