Established in 2014, Grandex Door Solutions Co., Ltd. is a premier entry door manufacturer operating from a modern 35,000 m² facility. With 16 years of industry expertise and 8 years of dedicated export experience, the company generates an annual export revenue of USD 28 million. Grounded in strong OEM and ODM trade backgrounds, our products primarily serve North America and Western Europe, supported by a network of over 1,200 supply chain partners.
We cater to leading building material distributors, real estate developers, and commercial contractors. Quality is integral to our operations: supported by strict ISO 9001 certified internal testing and third-party laboratory verification, our 45-member QA team ensures rigorous quality control throughout production. Driven by an active R&D division with 85 specialized engineers, we introduced 120 new door designs last year and offer full custom solutions spanning custom dimensions, security locks, surface finishes, and decorative glass panels.
Modern architectural paradigms across urban metropolitan centers demand sustainable, high-performance fenestration systems. Aluminum sliding doors have transitioned from basic residential partitions to critical structural components offering high thermal efficiency, acoustic insulation, and hurricane resistance. In North America and Western Europe, energy codes such as NFRC and Title 24 dictate stringent thermal break requirements. Chinese factories have spearheaded this transition by integrating thermal break polyamide strips, low-E double or triple-glazed units, and heavy-duty multi-point locking hardware.
Sourcing from top-tier Chinese manufacturing ecosystems provides distinct competitive edges: economies of scale, advanced CNC automation, and seamless compliance with international standards (AS2047, NFRC, CE, Florida NOA). By leveraging automated intelligent sorting lines and precision double-head cutting saws, factories reduce structural tolerances to fractions of a millimeter, ensuring airtight performance for high-altitude skyscrapers and luxury coastal resorts alike.
Raw materials
Sawing
Milling
CNC Milling
CNC Drilling
CNC Center
Cutting
Intelligent Sorting
Checking and Packing
Sawing Machine
Milling Machine
CNC Milling Machine
CNC Drilling Machine
CNC Center Machine
Double Head Cutting Saw
Intelligent Sorting Line
Semi-finished products inspection
Performance tester
Our products comply with rigorous global standards, including AS2047 for Australia and New Zealand, NFRC and Title 24 for North America, CE certification for Europe, and Florida NOA for hurricane-impact zones. Every batch undergoes strict third-party lab verification.
Yes. With 85 specialized R&D engineers and advanced CNC machining centers, we offer full custom solutions covering non-standard dimensions, custom surface finishes (powder coating, PVDF, wood grain), multi-point security hardware, and specialized acoustic or impact-resistant glass configurations.
Standard production lead times range from 25 to 35 days, depending on project scale, customization requirements, and order volume. Our 35,000 m² smart facility and automated sorting lines ensure high-capacity output without sacrificing quality.
We employ multi-layer protective packaging, including EPE foam, moisture-resistant barriers, sturdy corrugated corner guards, and fumigation-free wooden crates or steel pallets designed specifically for secure container freight transport.
Grandex Door
