Plumbing
Energy-efficient vinyl window system
PRODUCT GALLERY
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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