Windows
High-performance aluminum window system with thermal break technology. Multi-point locking, powder-coated finish options, and custom sizing for residential and commercial applications.
PRODUCT GALLERY
TECHNICAL SPECIFICATIONS
Aluminum alloy 6063-T5
Custom sizing available
Powder coat, anodized, wood grain
Class A fire-rated options available
U-value: 1.4-1.8 W/m²K
AAMA 520-12 compliant
Residential & commercial
Class A fire-rated options available
APPLICATIONS
PROCUREMENT & LOGISTICS
We handle the entire supply chain—from factory selection in China to delivery at your
construction site in the U.S.
Factory-direct relationships with verified aluminum window manufacturers across China.
We manage specification matching, sample approval, and production oversight.
Container consolidation, customs clearance, and U.S. last-mile delivery.
Pre-shipment inspection and testing to ensure compliance with U.S. standards.
Coordinate all material categories under one procurement contract.
TECHNICAL SUPPORT
GrandEx helps developers and contractors select suitable specifications, coordinate procurement across material categories, and manage logistics for residential and commercial construction projects.
Send us your BOM or project specs. We respond with a full landed-
cost quote within 48 hours.
End-to-end building material supply from China to U.S. construction projects — residential and commercial.
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