Doors from China — B2B Wholesale Supply
Energy-efficient vinyl window system
APPLICATIONS
Aluminum, UPVC, and timber systems for residential
Office buildings, retail spaces, and mixed-use developments
Hotels, resorts, and vacation properties
Corporate headquarters and commercial office fit-outs
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.
Member of the Building Industry Association
Serving construction projects across the USA
