Architectural aluminum window and door profiles engineered to meet strict Northern European thermal standards.
Finland's building sector has some of the most rigorous thermal performance requirements in the world. Driven by the Ministry of the Environment's Building Code (Ympäristöministeriön asetus uuden rakennuksen energiatehokkuudesta), external window profiles must support exceptionally low U-values (typically $\le 0.9 W/(m^2K)$ for standard windows and down to $0.6 W/(m^2K)$ for passive house developments).
Moreover, the extreme contrast between indoor heating (+22°C) and sub-zero Arctic winters (-30°C in Lapland and central regions) places severe mechanical stress on structural window and door frames. This temperature variation demands superior architectural design, employing high-quality PA66 GF25 polyamide thermal break sections to resist thermal warping and eliminate cold bridges.
"High-density weather insulation, multi-chamber design, and mechanical stability under high snow and wind loads are critical requirements for external window frame imports into Finland."
We combine advanced metallurgy, automated extrusion lines, and certified quality controls to supply the Finnish construction industry with low-carbon, highly insulating structural profiles.
Developing products to meet future regulatory demands, circular economy values, and low-carbon architectural practices.
Finnish developers prioritize construction materials with transparent Environmental Product Declarations (EPD). Using low-carbon raw materials in our smelting process ensures compliance with European green tax initiatives.
Modern building designs require heavy multi-layered glass assemblies. Our structural window frame profiles are engineered to support profile depths exceeding 90mm and glass weights up to 60 kg/m².
Our industrial profile section features dedicated recesses for automated sensors, concealed electrical cabling, motorized ventilation actuators, and smart locking hardware systems.
Established in 2009, Aolijie integrates research and development, custom extrusion engineering, precision anodizing, powder coating, and CNC machining. Headquartered in Sihui, Guangdong, with sales branches in Foshan and global logistics support, we operate under a rigorous ISO 9001 quality framework.
Our core mission is: Building sustainable cities for the world. We specialize in high-quality architectural profiles for doors, windows, curtain walls, and industrial applications. Our facilities are equipped with extrusion presses ranging from 900 to 2000 tons, allowing us to manage complex custom orders for commercial, industrial, and residential projects across northern Europe.
Operating from 4 production bases, our manufacturing capabilities include billet casting, die development, profile extrusion, surface anodizing, electrophoretic coating, PVDF wet coating, electrostatic powder coating, and wood-grain sublimation. In addition, our high-precision CNC deep processing center handles complex drilling, cutting, and assembly requirements for complete window and door frames.
With an annual capacity of 100,000 metric tons and a library of over 100,000 active dies, we support structural engineering needs globally. We provide custom solutions using high-grade 6063-T5, 6063-T6, and 6061-T6 aluminum alloys. Our thermal break profiles feature advanced polyamide strip integration, ensuring they stand up to the cold temperatures of Scandinavian winters.
Inspect our modern production floors, testing laboratories, and automated warehousing systems.
Securing structural components from our Guangdong base offers significant strategic advantages. Our manufacturing operations utilize Industry 4.0 principles, integrating automated material handling systems (AMHS) and real-time extrusion speed controls to ensure consistent dimensional tolerances across large runs.
This automated approach minimizes raw material waste and reduces labor costs, allowing us to offer highly competitive pricing. By managing the entire supply chain internally—from casting to final packaging—we insulate our production schedules from third-party bottlenecks. This vertically integrated manufacturing model ensures reliable lead times and consistent product quality for construction projects in Finland.
For Finnish contractors, this translates to stable project timelines, consistent raw material supply, and a reliable partner to support multi-phase residential or commercial developments.
Over a decade of continuous development, scaling up production to serve global markets.
Established a 10,000 square meter factory in Sihui, Guangdong, laying the groundwork for the 'Aolijie' brand and standardizing architectural aluminum extrusion processes.
Obtained 13 design and chemical utility patents while achieving ISO 9001 compliance. We established systematic testing protocols for mechanical wear and wind resistance.
Invested in our new 100,000 square meter production facility, increasing our annual output capacity to 100,000 tons. This expansion allowed us to support high-volume international projects.
Established a dedicated sales and custom engineering branch in Foshan to support international orders. We are also setting up our regional office in Malaysia for 2026 to optimize shipping networks.
Our quality assurance program is designed to meet strict European standards for construction materials.
Every profile undergoes 100% visual inspection along with secondary checks, ensuring only defect-free surfaces proceed to packaging. We perform random AQL sampling based on ISO 2859 or ANSI/ASQ Z1.4 frameworks.
Our testing laboratory performs regular tensile strength, yield strength, and elongation tests on each batch, ensuring our profiles can handle structural loads and weather stresses.
We test coating thickness, adhesion strength, and color consistency. We also perform accelerated UV aging and salt spray tests to ensure long-term durability in coastal Nordic conditions.
We provide a comprehensive Quality Inspection Report (including alloy chemical composition analysis and mechanical testing data) with every container shipped.
Every batch of aluminum profiles undergoes rigorous laboratory testing to verify mechanical properties and surface finishes.
Alloy Analysis
Tensile Testing
Hardness Testing
Dimension Checks
Coating Thickness Test
Salt Spray Test
UV Aging Test
Essential technical information for Finnish architects, structural engineers, and door/window fabricators.
Our thermal break profiles support high-performance glazing systems. When paired with triple-glazed insulated units (IGUs) containing low-E coatings and argon gas fill, window systems utilizing our 70mm and 80mm multi-cavity thermal break designs can achieve overall U-values ($\text{U}_{\text{w}}$) below $0.8 W/(m^2K)$, meeting Finnish building codes for residential energy efficiency.
Yes. Our precision extrusion lines operate within tolerances specified by EN 12020-2 and EN 755-9. This dimensional accuracy is critical for automated processing equipment and ensures quick assembly with sealants and structural hardware.
Our typical timeline is:
For coastal areas like Espoo, Oulu, or Turku, we recommend anodizing with film thicknesses of 20 to 25 microns, or Qualicoat Class 2 PVDF/powder coatings. These treatments provide long-term protection against salt spray and moisture, preventing filiform corrosion.
Yes. We support custom color matching using RAL, NCS, or PANTONE color systems. Our automated powder-coating lines are equipped with rapid-change color systems, and we provide dual-color powder-coating options (allowing different colors for the exterior and interior faces of the profile).
Explore our full range of profiles, including sliding doors, curtain walls, pergolas, sunrooms, and industrial solutions.
Aoli Aluminum
