About Sinwindow
Sinwindow is a direct aluminum window and door manufacturer in China, providing custom aluminum windows and doors, OEM/ODM manufacturing, and project solutions for global B2B buyers.
Who We Are
Sinwindow focuses on B2B aluminum window and door manufacturing. We serve window importers, wholesalers, brands, contractors, developers, and project buyers globally, delivering precision-engineered solutions tailored to your market.
Direct factory in China
Eliminate middlemen and secure competitive pricing directly from the source.
Custom aluminum windows and doors
Tailored profiles, glass options, and hardware to meet specific regional standards.
OEM/ODM support
Comprehensive manufacturing services to build and scale your own brand.
In-house manufacturing
From extrusion to final assembly, ensuring strict quality control at every step.
Project supply support
Dedicated engineering team for large-scale commercial and residential developments.
What We Do
Comprehensive manufacturing capabilities to bring your window and door designs from concept to reality.
Aluminum Profile Extrusion
High-precision aluminum extrusion from 500T to 4500T presses, ensuring structural integrity.
Tooling Development
In-house mold design and manufacturing for custom profiles with rapid turnaround times.
Surface Treatment
Advanced powder coating, anodizing, and wood grain finishes for superior durability and aesthetics.
Deep Processing
CNC machining, precise cutting, punching, and milling to meet exact specifications.
Finished Window Assembly
Complete assembly of windows and doors, integrating hardware and glass in a controlled environment.
Project Support
Technical documentation, shop drawings, and logistics planning for commercial developments.
Reliable Quality for B2B Buyers
We build partnerships based on consistent quality and dependable service.
Quality Control
Rigorous inspection protocols at every production stage.
Stable Delivery
Optimized production scheduling to meet your project deadlines.
Technical Support
Expert engineering assistance for complex product designs.
Long-Term Cooperation
Committed to growing together with our global B2B partners.
Looking for a Reliable Aluminum Window Manufacturer?
Send us your drawings, specifications, or project requirements. Our team will provide a tailored quotation promptly.
Email Us
Call Us
+86 15914354712
